Pulisic is apparently going to AC Milan at 22m euros. I guess he is the replacement for Brahim who went back to Real Madrid.
Prior to Pulisic's transfer to Chelsea, I saw a Dortmund CL match against Chelsea. During that match both Pulisic and Sancho could not beat Chelsea players 1-on-1, looked physically outmatched, and were entirely ineffective. Reus was injured, as he always is, so Chelsea didn't have to pay attention to anyone in the middle and easily marked Pulisic and Sancho out of the game. This is the end of the hype for both.