Martin Jol admits that Dimitar Berbatov has found it hard to accept that Fulham are not Premier League title challengers.
The Bulgarian joined the London outfit in August after falling out of favour at Manchester United following the arrival of fellow striker Robin van Persie.
While Berbatov's trophy collection was bolstered at Old Trafford, Jol believes that the striker is now focused on increasing Fulham's stature and improving his own personal record.
"Berbatov's not 18 or 19 so I don't have to protect him or talk about going back to Manchester United," Jol told reporters.
"He won all the prizes there. That is why he went there.
"He came to Spurs and he went to United, so he was always playing for clubs who could win things. Here it's different.
"That was probably quite a change for him, so I'm still trying to get that in his mind. We've got different targets.
"He is good. But he will still show (frustration) if you don't give him a good ball or the final ball's not good enough."