Jurgen Klopp needs to win the Premier League with Liverpool if he is to be considered among the club's great managers, according to Craig Johnston.
The former Borussia Dortmund boss has become a hugely popular figure with fans at Anfield since taking over in October 2015, thanks largely to his side's enthralling attacking style of football.
However, silverware has eluded Klopp since he arrived on Merseyside – they lost the EFL Cup and Europa League finals in his first season in charge, while they are yet to finish higher than fourth in the top flight under his guidance.
Klopp will hope to end that barren run on Saturday, when they face Real Madrid in the Champions League final, but Johnston does not thank victory in Kiev will be enough to cement his place among the top managers in the club's distinguished history.
Asked if he needed a league title to truly establish himself as a Reds great even if he wins in Europe, Johnston told Omnisport: "I think so, such is the nature of the game and Liverpool people.
"We all love beautiful football and trophies. Why? Because we've had them and we're used to them and they define us. The talking stops when you say put your medals or trophies on the table.
"To be a true great, he has to win medals. I think he's a great man and a great manager. I think he can do it personally, because he's different to all the rest we've had for a long time. Like [Mohamed] Salah, I love him dearly."
Johnston won five league titles and the European Cup in a seven-year spell with Liverpool during their dominant years in the 1980s.
The former midfielder thinks Klopp has got the players and fans believing similar levels of success are around the corner and has challenged the board to match the manager's ambition when it comes to the spending money in the transfer market.
"Liverpool are on track because the players are on fire, Klopp is winding them up, the fans are all behind them and it's back to the glory days," he said.
"Instead of naming individual players to come in, the club itself and owners have to up their game a bit to match what the players, the manager and the supporters are giving them.
"These guys are playing their hearts out and playing beautiful football but we need reinforcement and that comes from the vision from the top. That's where we have to lift our game a little because if we don't, it will be recognised.
"We have to keep bolstering the squad with quality and class. That's how you became a true champion going forward."
|Marcelo happy with Madrid squad amid transfer talk|
|Foles isn´t worried about Brady´s handshake snub|
|Eli Manning on Jalen Ramsey´s comments: ´Who?´|
|Cerezo: Atletico´s objective is to reach Champions League final|
|Judge´s recovery taking longer than expected|
|Ronaldo in the past as Casemiro backs Lopetegui after Madrid loss|
|With our ´cojones´ Atletico can beat anyone – Costa revels in Super Cup glory|
|Super Cup loss doesn´t change Real Madrid transfer policy, says Lopetegui|
|Griezmann: Super Cup triumph justifies staying at Atletico|
|Valverde defends Suarez performances|
|Simeone´s eclipses Aragones as Atletico´s top coach with seventh title|
|Rockets GM: LeBron James is ´the greatest ever´|
|Salihamidzic, Kovac not standing in way of Rudy exit|
|Jaguars DB Ramsey calls Bills QB Allen ´trash´|
|Real Madrid 2 Atletico Madrid 4 (after extra time): Saul stunner seals Super Cup glory|
|Ex-India Test captain Wadekar dies aged 77|
|Gundogan ready to step up in absence of injured De Bruyne|
|Djokovic overcomes illness to see off Mannarino|
|Diego Costa nets fastest UEFA Super Cup goal ever|
|Everton feared missing out on Mina after World Cup strike|
|Barcelona 3 Boca Juniors 0: Messi, Malcom net as Barca win Joan Gamper Trophy|
|All Blacks stick with Barrett as Mo´unga misses out altogether|
|Modric benched for UEFA Super Cup clash with Atletico Madrid|
|Cipriani charged with assault after Jersey nightclub incident|
|Hamburg 1 Bayern Munich 4: Wagner and Muller hit braces in comeback victory|
|WATCH: Messi scores first goal as Barcelona captain|
|Iniesta, Xavi and Puyol were great teachers, says new Barcelona captain Messi|
|Moses retires from international football|
|Goals, assists, set-pieces - The stats that show De Bruyne is almost irreplaceable for City|
|Bergeron wins mammoth 24-man U.S. Amateur play-off|
|Hart to Burnley "not rocket science", says Dyche|
|Leipzig, Schalke reject Rudy transfer rumours|
|Yedlin knee injury not serious, Newcastle confirm|
|Bartomeu satisfied with Barcelona squad amid Pogba links|
|Kevin De Bruyne suffers knee injury|
|Steelers QB Roethlisberger in concussion protocol|
|Kehrer to PSG not complete, say Schalke|
|Hopoate handed 10-year ban from NSWRL|
|Is this worth it? Injuries prompted Te´o to consider future|
|Croatia hero Subasic retires from international football|
|Iniesta makes it two in two for Vissel Kobe|
|Chelsea send out defensive duo on loan|
|Zaha 2023: Palace star means more than goals|
|De Jong set for Ajax stay despite Barcelona interest|
|Serena ´still at the very beginning´ of comeback|
|Ajax can benefit from Mourinho approach - Blind|
|Foley not convinced by reports All Blacks will drop Barrett|
|Zaha signs Crystal Palace extension|
|Burnley midfielder O´Neill makes A-League loan move|
|Godin yet to renew with Atletico Madrid amid transfer interest|
|Federer ´feeling better every day´ after Wimbledon disappointment|
|Kante comfortable with surprise new Chelsea role|
|Rugby Championship 2018: The numbers behind New Zealand´s dominance|
|LaLiga 2018-19: Bale ready to be Madrid´s shining light after five years in Ronaldo´s shadow|
|Rodgers unimpressed by absence of ´fit´ Boyata|
|Braves´ Acuna Jr. has arrived as a true MLB star|
|LA Galaxy 2 Colorado Rapids 2: Jackson´s deflected strike sees spoils shared|
|Victory offer postponed retirement, says Honda|
|Kyrgios forgets tennis shoes, Federer back in business|
|Williams knocked out as Garcia and Pliskova advance in Ohio|
|Kvitova sees off Serena in Cincinnati classic|
|Federer dispatches Gojowczyk in Cincinnati|
|Stead succeeds Hesson as New Zealand coach|
|Duminy encouraged despite South Africa´s mixed results|
|Thiem withdraws from Cincinnati Masters|
|Edwards joins Ospreys in consultancy role|
|Former Arsenal and Barcelona player Song joins Sion|
|I´m very happy with what I have - Spalletti not desperate for Modric|
|Roethlisberger evaluated for concussion after practice|
|Brady ´absolutely´ expects to face Eagles|