"I'd like to keep him for the season but I'll have to have a chat with Gareth (Southgate) first," he told the Watford Observer.
"It's important in situations like these that the communication lines are kept open. I've given Gareth the same treatment I did with Sir Alex (Ferguson) when we had Ben Foster.
"He knows what I think about the player. Adam is thriving at being given the opportunity to play regularly and he's learning his trade."