Chelsea boss Thomas Tuchel insists there's no issues with Christian Pulisic.
In a now-deleted post, Pulisic's father suggested he could leave with a "big six months ahead", despite his love for "his club, team-mates and London".
"I am not concerned if the player's father says he does not love me [on Twitter]," Tuchel laughed. "It's a normal thing [for a player to be frustrated]. We have our reasons to go for players in the first XI.
"You will never see happy faces from players who are not selected. With me and Christian, there is zero problem. In some matches he has a huge impact from the bench. I didn't even know [about his dad's tweet]. It has nothing to do with it.
"The players are responsible for being in the team and staying in the team. Am I always right? For sure, not. Is it always fair? For sure, not. The reaction from Christian has been the opposite, he's very strong, very positive in the last weeks."