Benfica have set their asking price for Ola John.
The attacker has been watched by Southampton this season, while his agent has confirmed contact with Swansea City.
Swansea have made an approach to Benfica about a deal for John in the coming days.
Record says Benfica are willing to sell for a price of €4 million.
John has stated he's happy in Lisbon, though does have an ambition of playing in England.