MICHAEL BALLACK says Maurizio Sarri needs to generate the right mentality in the Chelsea team to make them successful.
The former Blues midfielder won one Premier League title, two FA Cups, the League Cup, the Community Shield and reached the Champions League final during four years at Stamford Bridge.
Ballack joined Chelsea in 2006 and earned plenty of silverware while there, especially during the latter stages of his time in west London.
At present, the club look in safe hands under new manager Sarri.
But trophies are what the club and fans crave, and Ballack believes he knows how they can be obtained.
However, the German acknowledges much has changed in football and at Chelsea since he played there.
Ballack told The Sun: “It’s difficult to compare teams across the generations. The philosophy of this team is different.
“When I joined Chelsea in 2006 I came to a really strong team that stayed together for a number of years.
“We had a lot of leaders in the squad, national team captains, big players, as well as coaches with big characters.
“I see a more technical Chelsea side now.
“If they want to be top again, there are a few little things I can think of.
“The key one is the team’s mentality. That is so important, but also the ability of the coach to give the right spirit to the team.
“They have a few players who have been there for a while, the likes of David Luiz, and others, and they need to lead the team to win trophies.
“That’s really important. You cannot win without that type of player, someone who lives that feeling, who lives it totally to deliver that mentality, to the whole group.
“That winning mentality is vital to success and lifting trophies. It is not easy to have.”
Title-chasing Chelsea are in action tomorrow in the Premier League when they Everton (2.15pm).