Aston Villa boss Paul Lambert expects former club Borussia Dortmund to sell Robert Lewandowski.

Lewandowski is being linked with Manchester United, Bayern Munich and Manchester City.

Lambert said: "I think that's when it becomes frustrating, if you do have to lose ones because you're trying to build. Dortmund are going through the same with Mario Gotze going to Bayern.

"Maybe the big lad up front (Lewandowski) might go."