Pogba rejoined the Red Devils for £89million from Juventus earlier this summer.
"He is a quality player," Reading boss Stam told SkyBet. "He's shown that in Italy.
"If there is a big club interested in a certain player like that you know that Juventus are going to ask for a lot of money.
"But if a manager at a club that has the money wants to spend it, then they are going to spend it.
"That's how the market is."