The striker has been linked with a move away from the Liberty Stadium after a fine first season in the Premier League, while the Dutchman is still on loan from VillarrealSwansea City duo Wilfried Bony and Jonathan de Guzman have spoken of their desire to remain at the Welsh club.
Bony was a revelation in his first season at the Liberty Stadium, scoring 26 goals in all competitions to seal his place in Ivory Coast's World Cup squad.
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He told reporters: "I will be a Swansea player. I don't react to transfer speculation. I just focus on my job, that's all I think of.
"I have three years' contract with the club and I just focus on my job. If something happens we would have to decide."
De Guzman is also bound for Brazil after he was named in the Netherlands squad for the upcoming showpiece.
The midfielder has just concluded a second season on loan at Swansea, but is still contracted to Spanish side Villarreal and Garry Monk is eager to extend his stay at the Liberty Stadium.
He said: "I had a good chat with Garry, he knows how I feel about Swansea and my situation here. I have two more years left [on my contract] at Villarreal and now it's negotiation time.
"I'd like to stay. I'm happy here. Whether it's another loan or permanent I don't know, it's not my choice. There are a lot of people involved but hopefully we can sit around a table as soon as possible and see what happens."