Romelu Lukaku is confident Manchester United's squad already has enough to challenge Manchester City for next season's Premier League title, suggesting investment is not necessary.
Although United have produced a marked improvement in the Premier League from last season's sixth-place finish and look set to end the campaign second, they are some way adrift of City.
Pep Guardiola's men were crowned champions last week as a result of United's shock defeat to rock-bottom West Brom at home.
A win for City over Swansea City on Sunday will restore a huge 16-point gap at the top of the table, but Lukaku insists they are not that much better than United.
Jose Mourinho's side beat Tottenham 2-1 in Saturday's FA Cup semi-final and Lukaku feels the only thing standing between United and challenging City is producing such performances on a consistent basis.
When asked how much investment United need to challenge City, Lukaku told reporters: "I don't know, you'd have to ask the manager.
"I'm really confident in my team-mates. I think we can do it with the team we have now, but we should have shown more consistency throughout the season
"For us now it's up to us to be more consistent and the manager needs to see if he has to add more players, but with the players we have now, I think we have enough – we just have to be more consistent.
"It was a strange season for us. If we had more consistency we could have been up there with Manchester City now.
"But we know what we have to improve for next season and winning games like this is what we do.
"If you look at games we have played against the top six, we have won a lot of them so when we played against Tottenham we were confident as well. We have to keep going like that."
Although Premier League success has long looked unattainable this season, United are at least closing in on ending the campaign with a trophy after victory at Wembley.
Winning the FA Cup would be no replacement for a league title triumph for Lukaku, however.
"Well, I want to win the title, that is the thing," Lukaku added.
"Winning the FA Cup would be nice, but I don't want to talk about [it]. I just want to end the season well, hopefully take second and that will prepare us really well for the final."
|WATCH: Djokovic wins match, loses car|
|Bolt arrives in Sydney for A-League trial|
|Red-hot Bertens beats Svitolina, Halep marches on|
|Snedeker preserves Wyndham lead|
|Halep hits back to torment Tsurenko|
|Raonic fails to break Djokovic stranglehold|
|Emery seeks more ´demanding´ Ozil|
|CAF Champions League Review: Wydad, Al Ahly & TP Mazembe qualify|
|Stephen Curry wants to finish his career with Warriors|
|Hazard among Europe´s best but can improve, says Sarri|
|Tigers boost top-two hopes, Giants close in on fourth|
|Birmingham City 0 Swansea City 0: Monk´s men held despite dominance|
|Inter taking legal action against Tebas over Modric transfer comments|
|Serie A transfer round-up: Zaza joins Torino, Parma sign Gervinho|
|Roma chief Pallotta makes light of De Laurentiis claim|
|Federer starts double-header by seeing off resilient Mayer|
|Ospina joins Napoli on loan from Arsenal|
|Klavan completes Cagliari switch|
|Djokovic holds out against Dimitrov as Raonic awaits|
|New dates confirmed for postponed Serie A fixtures|
|Halep breezes past Barty to set up Tsurenko clash on same day|
|Olesen unable to capitalise on strong start as Jamieson, Waring go clear|
|Hoffenheim tie Kramaric to four-year deal|
|Mina to miss Southampton clash while Gomes is ´weeks´ away|
|Barcelona coach Valverde dismisses Pogba speculation|
|Valverde not prioritising Champions League over defending Barcelona´s LaLiga title|
|Allegri thanks outgoing Juventus icon Marchisio|
|Pants display from Beef? Johnston forced into change of trousers in Sweden|
|Tour champion Thomas has Welsh velodrome named in his honour|
|Gloucester surprised and disappointed by RFU´s swift Cipriani charge|
|Storm skipper Smith´s back injury not ´too serious´|
|Spurs fixture switch doesn´t appeal to Guardiola|
|Brazil call up Andreas Pereira & Arthur but omit Man City stars|
|Mbappe returns to PSG squad, Kehrer set for debut|
|No Messi in Argentina squad as Simeone wins first call-up|
|England man Roy embarrassed by self-inflicted facial injury|
|Atletico Madrid fined for breaching third-party regulations|
|Cipriani charged by RFU after common assault conviction|
|No contact, no negotiation - Leonardo denies AC Milan deal for Milinkovic-Savic|
|Kovacic set for Chelsea debut against Arsenal|
|Fury´s father restrained as Wilder crashes Pianeta weigh-in|
|Kohli and Bumrah fit for win-or-bust Test|
|Stokes ready and desperate to help England, says Root|
|Salah, Mane and Firmino not in competition says Klopp|
|Darmian staying at Manchester United, says Mourinho|
|Guardiola cites fatigue as factor for stricken De Bruyne|
|Kovac approves Rudy departure from bloated Bayern midfield|
|Klopp insists no player leaves without his approval amid Klavan rumours|
|Real Madrid complain to FIFA over Inter´s alleged Modric approach|
|Mourinho ´has never been so happy´ with unsettled Pogba|
|Manly implode amid Barrett uncertainty, Storm´s Smith injured|
|Sarri certain Hazard is staying at Chelsea|
|Liverpool, Champions League, Manchester derby - The matches De Bruyne will miss due to injury|
|Campbell joins Frosinone from Arsenal on permanent deal|
|Schalke sign Lille´s Mendyl to end left-back hunt|
|Stokes back in England team as Curran drops out|
|Ronaldo doesn´t guarantee Juventus the title, warns Allegri|
|Tuchel keen to guide PSG star Mbappe after World Cup heroics|
|Yuri: I can see Neymar joining Real Madrid|
|Milan pounce for Castillejo as Bacca joins Villarreal permanently|
|De Bruyne to miss three months for Manchester City|
|Manchester City talent Arzani completes Celtic loan|
|I know how precious my career is, says regretful Cipriani|
|Paulo Bento named new South Korea coach|
|Milan complete Laxalt deal|
|Poyet suspended by Bordeaux after outburst against board|
|Tuchel will let Neymar and Cavani settle penalties themselves|
|Hooper: We´re ready, bring on the All Blacks!|
|Outstanding Australia deserve our respect - Read|
|Dragons´ Widdop set for Finals return|