Swansea boss Michael Laudrup in unconcerned over selling their best players over the summer.
“You can't keep too many players against their will. There can be many reasons when it can be difficult to say no [to a bid]."
Laudrup, though, insisted there would be no mass exodus from the Liberty Stadium and stressed that some players will only be sold if it benefits the club.
"If we have three or four regulars saying they have the possibility to join a bigger club and want to go, we can't allow that," he said. "But there might be one case."
Laudrup used the £15m sale of Allen to Liverpool as the perfect example of an offer that was too good to turn down.
"He's a very good player, but £15m... when I heard those figures I couldn't believe it," said Laudrup.
“It's not about spending a lot - it's easy to spend a lot of money. I'd rather spend well.”
"A case like Joe Allen you have to say 'what do we gain by keeping him here if he really wants to go, the money is good and what would we do with that [transfer] money?'
"I think it has been a good deal for Swansea. Joe is a very good player but we got Jonathan de Guzman, who has already scored eight goals and playing the same position.
"We did well there. You can't always do that, but it's a balance."