Rafa Benitez has explained his decision to put Daryl Murphy up for sale.
The striker joined Newcastle United from Ipswich Town last summer.
And Murphy scored five goals – six in all competitions – during the club's Championship-winning campaign.
However, United manager Benitez is looking for "different things" in the Premier League.
Benitez told the Irish Examiner: "We are talking about different things in the Premier League, and we have some clubs asking about him.
“We have been chatting at training in recent days, and he knows that if a club comes in, he will go on a permanent transfer once the deal is best for him and us.
“I was really pleased with his contribution last season, not just because he played games and scored goals, but he led by example, both in the dressing room and training.
"He was a positive influence on the team.”
Sunderland have an interest in re-signing Murphy, who spent five years at the Stadium of Light earlier in his career.
And Birmingham City and Nottingham Forest have also been linked with the Republic of Ireland international.