Palmer, 23, has struggled with a persistent groin injury since the start of the season and has consequently missed out on a place in Tuchel’s latest England squad.
The talismanic playmaker was rushed back to face Man United earlier in the season but had to be substituted after just 21 minutes.
Tuchel has since warned Palmer that his place in next year’s World Cup squad could be in danger and admitted he’s worried his groin issue could become chronic.
The Three Lions boss said: "He was only in the June camp, that is concerning, of course. First of all, the most important thing is that he can play without pain, because the groin issue is a very dangerous one to become chronic.
“This is the most important thing. When he's fit and when he has rhythm and flow, he can decide matches on club level and, for sure, on international level.
“We know that. There is also with him no problem at all (for me). We clearly understand and see the potential and the quality, but there is also a reality that he was not available in five of the (last) seven camps, so right now there are two camps left before the World Cup."