James will see a specialist about the knee injury he sustained in the game.
The right-back was taken out of the game after twisting his knee in a challenge.
Potter urged caution despite fears that the England player could miss the World Cup.
He said there was no point in looking into the scenario yet.
We need to check and then move on.
He said: "Reece is due to see a specialist over the weekend so until that information is available, there is not much more I can say."
We need to see a doctor. He felt good yesterday, but until he gets these things checked, we don't know.
Manchester City's Kyle Walker had groin surgery earlier in October and Trent Alexander-Arnold picked up an ankle injury in last weekend's game.
According to Potter, N'Golo Kante had suffered a "setback" in his recovery from his injury and would see a consultant at the weekend.
"If anything happens like that, they are going to be disappointed, because I have a degree in leadership and emotional intelligence." They want to leave.
They know that it's a profession where things can happen and they are competing at the highest level.
We will help them deal with the upset. I miss the World Cup more than anything from my career.