Manchester United and the rest of the Premier League's chasing pack will find it difficult to stop Manchester City next season if Pep Guardiola is given more funds to strengthen his side, according to Jose Mourinho.
City won the title with five games to spare this term, having benefited from the signings of Kyle Walker, Ederson and Bernardo Silva, as well as the January capture of Aymeric Laporte. Another significant acquisition, wing-back Benjamin Mendy, made his comeback on Sunday after being sidelined since September due to a serious knee injury.
That investment from the club's Abu Dhabi owners has helped Guardiola orchestrate a dominant march to the title with United second, three points ahead of third-placed Liverpool with a game in hand but a distant 16 points back from City.
Speaking after his team's 2-1 FA Cup semi-final victory against Tottenham at Wembley on Saturday, Mourinho expressed his concern over the potential for City to tighten their stranglehold at the top, should further reinforcements arrive at the Etihad Stadium.
He said: "Can we improve next season? Let's try. Can Man City keep this level and improve this level? Only they can say.
"But if they have the team they have and are going to invest in the team they have, of course it is going to be very difficult for all of us."
United have also made significant outlays in recent years to bring in the likes of Romelu Lukaku, Paul Pogba and Alexis Sanchez, Mourinho hinting the club could pursue a more conservative approach in the transfer market ahead of the 2018-19 campaign.
"We are going to invest the basic [amount required] to improve our squad – find a replacement for Michael Carrick, if Marouane Fellaini leaves we are going to need a replacement for Marouane Fellaini," he added.
"In a squad there are always a couple of players who are not playing a lot and they will try to leave.
"So we are going to touch our squad again and believe in more than spend, spend, spend. It is probably about the evolution of our players.
"We have some young players. They need to catch opportunities for their evolution with both hands and let's see."
Despite outlining his expectations for United's off-season recruitment, the Portuguese was adamant the team's focus must be on their next Premier League clash at home to Arsenal on Sunday, as the Red Devils seek to secure the runner-up berth behind City.
"In this moment I don't think about next season or the [FA Cup] final," he said.
"I think about Arsenal because we need one point to finish in the top four but we need seven to finish second.
"We deserve to finish second and we have to finish second."
|Curry, Durant lead Warriors past Thunder|
|Kjaer surprised by LaLiga-leading Sevilla as Machin´s men remain grounded|
|A-League preview: Honda the big arrival as fascinating season awaits|
|Mexico 0 Chile 1: Sanchez helps La Roja to late win|
|Celtics too good for 76ers in NBA opener|
|United States 1 Peru 1: Flores salvages late draw for visitors|
|Martinez not worried about Belgium depth|
|Red Sox move ahead of Astros in ALCS|
|Depay ´a joy to watch´, says Koeman|
|Timberwolves owner looking to trade Butler, backs Thibodeau|
|Shepard says Giants have ´total faith´ in Manning|
|Hazard is out of this world – De Ligt enjoys Belgium test|
|Tite: Brazil were better than Argentina|
|Foley eyes World Cup after re-signing with Wallabies, Waratahs|
|Low slams decisive France penalty call|
|I fined him for his goal at Old Trafford! Giggs delighted for Wales hero Wilson|
|Matuidi lauds Deschamps´ tactical nous after Germany win|
|Scaloni excited by Argentina despite Brazil loss|
|Tsonga back in business, Dzumhur dumped out in Moscow|
|Germany suffer six defeats in a year for first time|
|Many clubs have asked about Piatek - agent|
|Bartomeu: Barca open to defensive reinforcements after Vermaelen injury|
|Bonn spoil PAOK´s landmark European game|
|Konta conquers Mertens in Moscow|
|Republic of Ireland 0 Wales 1: Wilson stunner moves Giggs´ side top|
|France 2 Germany 1: Griezmann delivers Low blow as Les Bleus reign in Paris|
|Belgium 1 Netherlands 1: Groeneveld cancels out Mertens strike|
|Argentina 0 Brazil 1: Miranda heads late winner after rivalry fails to ignite|
|Messi would struggle in this Manchester United team – Scholes|
|Falcons place Devonta Freeman on injured reserve|
|Westbrook ruled out of Thunder opener|
|Wilder´s team open to Joshua talks|
|Brentford appoint Thomas Frank as new head coach|
|England´s perfect performance sets the standard - Trippier|
|Odell Beckham Jr. needs to create headlines on the field, says Giants owner|
|Robshaw joins list of England absentees|
|Chile need goals from Sanchez despite United form - Rueda|
|Modric reveals Ronaldo respect, ´will never play with´ Messi|
|Osaka can be one of the greats, says coach Sascha Bajin|
|Liverpool´s Naby Keita carried off injured in Guinea match|
|Duminy to miss Australia tour for shoulder surgery|
|F1 Raceweek: Ferrari ready to ´challenge the impossible´ as Hamilton nears title|
|Umesh replaces injured Thakur in ODI squad|
|IAAF delay implementation of testosterone ruling amid Semenya challenge|
|Fakhar and Sarfraz lead Pakistan recovery after Lyon blitz|
|Japan see off Uruguay in seven-goal thriller|
|Arda Turan given huge fine by Istanbul Basaksehir after alleged brawl with singer|
|Busquets no better or worse than Dier – does Opta data back up Allardyce claim?|
|United boss Mourinho charged for alleged post-match comments by FA|
|Halep withdraws from Kremlin Cup ahead of WTA Finals|
|Renato Sanches eager for further Bayern Munich minutes|
|Nations League standings: Promotion, relegation and race for finals|
|Windies coach Law banned for ´inappropriate comments´ in India Test|
|Carrick denies Manchester United stars are ´not trying´|
|Ferrari struggling under pressure of chasing Mercedes, says Massa|
|Australia desperately need Smith and Warner back - Warne|
|Draxler warns Germany: Mbappe has 300 hp!|
|Draymond Green says Warriors will have to ´bring it´ every night in the West|
|England´s ´wonderful bravery´ leaves Southgate excited for the future|
|Jayasuriya: I always conduct myself with integrity and transparency|
|Northern Ireland stars hurt by lack of club football, says O´Neill|
|Rodgers inspires late Packers comeback|
|Brewers blank Dodgers to take 2-1 NLCS lead|
|Cavaliers, Nance agree to four-year extension|
|Ramos wants Spain to believe in Luis Enrique´s team|
|De Laurentiis: I´ve spoken to Genoa and agent about Piatek|
|Kaka tips bright future for Paqueta after Milan agreement|
|Suns star Booker set to return for season opener|
|Warriors coach Kerr not expecting fast start from NBA champs|
|Fultz to start for 76ers as Brown eyes NBA Finals|