Jason Roberts can understand Blackburn Rovers teammate Phil Jones making the move to Manchester United.
There has been no official confirmation from either club but Jones was widely reported to have undergone a medical at United on Wednesday.
Roberts told BBC Radio Five Live: "When Manchester United come calling there aren't many clubs who keep their players.
"It's one of those things but hopefully he'll go on to bigger and better things and we'll improve and will be looking at the top 10 next year."