He will start with the academy before eventually integrating back into the first team by the end of the season.
In yesterday's press conference, Tuchel said: "I don't think we will rush this. Ben will now be in the transition to join academy training, to have team training but not on the physicality level like with us.
"This will be his next steps in the next weeks. Hopefully he can join our training at the end of the season but no matches on that level."