Jose Mourinho must wrestle back the Premier League trophy from Manchester in his second spell as Chelsea boss, says Ray Wilkins.
Mourinho, who has signed a new four-year deal with the club, led the Blues to consecutive league titles in 2005 and 2006.
But since his departure in September 2007, Chelsea have lifted the trophy just once - under Carlo Ancelotti - with Manchester United taking the honours in four out of the five remaining seasons, being pipped in 2011-12 by Manchester City.
"Mourinho's main aim will be to wrestle back the Premier League," said former Chelsea assistant manager Wilkins. "I think Sir Alex Ferguson's main aim was to wrestle back the Premier League from Manchester City and he did so.
"Finishing third or fourth is no good to Chelsea - they need to be finishing up there and fighting for the Premier League.
"I know the Champions League is a great trophy but the best trophy you can win is your domestic trophy. That shows consistency and a level of performance over 38 games. Anything else becomes a bit of a bonus."
Announcing the appointment, Chelsea chief executive Ron Gourlay said that Mourinho, 50, "remains a hugely popular figure at the club" despite his abrupt departure by mutual consent after his relationship with Russian owner Roman Abramovich broke down.
Wilkins agreed, adding that Mourinho's return to Stamford Bridge is good for Chelsea and English football.
"I'm thrilled," said Wilkins. "Having lost Sir Alex Ferguson, who has been unbelievably good, from our game it's nice that we've got another fantastic personality coming back into our game. It's good for Chelsea and the Premier League as well.
"The people at Chelsea absolutely adore the guy and the supporters love him to bits. He wants to be loved - so we read - and he's going back to the best place for him.
"I'm sure that with the players that they bought last year - now they've got another year's experience in the Premier League - that Chelsea will be one of the top teams once again next year.
"They [Abramovich and Mourinho] fell out because of principal - Jose wanted it one way and Mr Abramovich wanted it to go another way.
"I would assume that they've spoken on numerous occasions to sort out their differences and have come to a very happy ending."
Tony Cascarino - Chelsea, 1992-94
"The Chelsea fans have got who they wanted back in charge and it's going to be a real roller-coaster ride; I'm sure Jose's press conferences are going to be entertaining - the first one will be like seeing The Rolling Stones or The Beatles - and it's great that having lost one great manager in Sir Alex Ferguson, we have another one back in the Premier League. Mourinho's teams are always organised but they always accumulate goals, too - his Real Madrid team was very exciting - and I can't see anything but around £100million being spent in the transfer market to help him add to the team, with reinforcements in the forward line a certainty. You wonder if he can have success second time around but I would be amazed if Chelsea don't win anything under Jose - even though I'm sure Abramovich will be quick to act if he senses failure."
Scott Minto - Chelsea, 1994-97
"I don't think the Chelsea job is bigger than the Real Madrid job but I would suggest this move is aimed at making Chelsea into the English version of Real Madrid. Under Abramovich they have spent so much money but it is not about winning trophies any more, it's about playing a certain style. While managers have been winning trophies and kept on doing so on a year-on-year basis, they are not doing it in the way Abramovich wanted. Initially, that was the problem with Mourinho, who provided winning but pragmatic football, but he has inherited a side with skilful players and I think he can adapt and provide winning and attractive football."
Kerry Dixon - Chelsea, 1983-92
"I think this is possibly a bigger challenge than when Jose first came to Stamford Bridge in 2004 because Chelsea are a club in transition but he won't shirk that challenge and will no doubt be aiming to win the one trophy that eluded him before - the Champions League - by the end of his four-year contract. Plus, the fact that he has been given a deal of that length as opposed to a one-year rolling contract is a statement of intent from the club and I think he will be given a decent period of time to get things right. The sky is the limit for Chelsea with him in charge."
Ron "Chopper" Harris - Chelsea, 1961-80
"I think that 95 per cent of Chelsea supporters are pleased that Jose is back and I think Abramovich deserves a pat on the back for getting him to sign. Mourinho has a great track record wherever he has been and if he can bring in two or three more players to Chelsea the club will have a tremendous squad and hopefully win more trophies. Jose has perhaps gotten older and wiser and calmed down a bit, but he is still on the touchline doing the things he has always done and is great in interviews, so I think the fans will be desperate to get tickets to his first game back in charge."