Romelu Lukaku has scored just 4 goals in 10 games since his return to Chelsea.
The Belgian has not found the net since the Champions League clash against Zenit on September 14.
His goal drought lasts longer than a month but Thomas Tuchel is not particularly concerned.
As per the manager, the striker has played too many matches recently and it affects his form.
“In this very moment I feel Romelu is a bit overplayed, I think he played too many competitions over the summer, too many competitions with the national team,” Thomas Tuchel said at a presser, as quoted by RTE.
“And now he has played the Nations League.
“He is a fantastic athlete and such a competitive guy that he digs in deep, he wants to win these things and he never takes it easy and judges games. He wants to be out there and win.”
“I know how much he wanted to have a good outcome for Belgium in the Euros, and the Nations League meant a lot to him too.
“I feel him a bit tired, not that we have a concern, but for me, it’s that he doesn’t fully enjoy it without having second or third thoughts.
“For me he is overplayed a little bit. And this is the key point. Once he finds his rhythm he will find things a bit easier but it’s difficult to judge whether he needs a break or he needs to keep playing.
“It’s the same for some other players too, Mason and Jorgi. They have a lot of weight to carry for their countries. They take it and they love it, they are competitors.
“But if you play 1,000 matches a year it can feel a bit heavy, although they love the game. They are such good guys but this is what I feel just between the lines.”