Chelsea paid a club record fee of £97.5m to sign Romelu Lukaku from Inter Milan last summer.
The Blues were in need of a striker, and Lukaku was seen as the missing piece for Chelsea.
After a fine start in his first three games, it went downhill from there until the end of the season.
Chelsea are yet to sign a striker this summer, but Lukaku has since made a return to Inter Milan, on a season-long loan deal.
Chelsea boss Thomas Tuchel has revealed that he tried to have another chance with Lukaku this season, but the Belgian was rather keen on a return to Italy.
The Blues manager admitted his disappointment that the Lukaku signing just didn’t work out last season.
“Yes, I think we should all be honest that it was disappointing, but also for myself, from my term of performance. I am far away from pointing the finger at Romelu, but he is disappointed, I was disappointed,” Thomas Tuchel said of Romelu Lukaku in an interview with Sky Sports.
“It is on me to find structure, to build an environment, to make a player confident and to bring the very best out of him, that’s why I am here.
“I’m serving the players, not the other way around. I did not succeed, that does not make me happy.
“I was ready to give it another try, Romelu decided differently and expressed his wish to go back.
“The owners decided, in the end, to agree to his wish, so we need to find new solutions.”