New Chelsea defender Kalidou Koulibaly believes that a lack of confidence may have impacted Romelu Lukaku's difficult stint at the club last season. The Belgian made a club-record return to Stamford Bridge last summer, but struggled to hit the heights he hit in his time at Inter Milan.
The 29-year-old scored 13 goals across all competitions and despite his difficulties, the striker ended the campaign as the club's top scorer. However, injuries caused problems on the pitch, while a controversial interview with Sky Italia only added to concern off of it.
Chelsea boss Thomas Tuchel admitted earlier this year that more was expected from the forward after his move back to London: "Disappointed is not the right word but of course, we thought and for him as well, he wanted to produce the numbers right from the start but we are all humans and we demand a lot defensively from our strikers as well."
