Chelsea's summer recruit Kalodou Koulibaly suggests Romelu Lukaku struggled in the Premier League, due to a lack of 'confidence'.
The 31-year-old centre-back completed a move to Stamford Bridge from Serie A earlier this summer - before Lukaku completed the reverse move as he secured a loan back to Inter Milan.
Koulibaly, who knows Lukaku well from their time playing against each other in Italy, suggests that there could have been issues in the Belgian's 'private life' that caused on-pitch struggles.
Speaking in his press conference on Wednesday, the former Napoli defender said: 'Romelu is a good player, a nice player, a talented player.