Pulisic's hamstring injury could potentially rule him out for the upcoming AC Milan match against Fiorentina on Sunday in the Serie A. Pochettino points out the different climates the players who play in Europe face when playing for the U.S. and believes it is challenging for his players.

I think we are in that process where we need to progress or we need to build something, they are more solid on their ideas." Even if Pochettino stitches together a new look for the USMNT in time for Tuesday's match,