Tottenham Hotspur captain Ledley King has backed Younes Kaboul to make an improved impression following his return to White Hart Lane.
The French defender, who originally move to Spurs in 2007, has been in fine form for Portsmouth this season and was linked heavily with a number of clubs in January before being snapped up by former coach Harry Redknapp.
Following in the footsteps of Jermaine Defoe and Peter Crouch, Kaboul is now being tipped to help Spurs make the Champions League places as they battle with Liverpool, Aston Villa and Manchester City for fourth place.
"I've spent time with him before and we spoke about him becoming a better player and concentrating," said King.
"I'm sure that's going to happen. All young players make mistakes, especially in defence. But it's down to us as a team to nurture his talent because he has fantastic ability.
"I've seen him this season and he has done well. He can be one of the great defenders around if he works hard and improves."