Bolton Wanderers central defender Zat Knight has been warned to sharpen up his concentration by manager Gary Megson.
The 29-year-old former Fulham and Aston Villa stopper only joined the Trotters in the summer and has been a first-team regular ever since, but Megson still has concerns about Knight's performances.
He said:"There is more to come from Zat, if he can just apply himself a bit better.
"If he just gets that concentration a bit sharper and gets that drive and desire, he can go on and on.
"He has always had this question mark about him at Fulham and Aston Villa, but he now has a chance to eradicate it."
Knight has made 13 appearances for Bolton to date, with his last two outings ending in consecutive 4-0 defeats to Chelsea in both the Carling Cup and the Premier League.