Carlos Carvalhal says Gary Hooper's Sheffield Wednesday future lies in the hands of Owls chairman Dejphon Chansiri.
Hooper's matchwinning brace in a 2-0 win for Wednesday against Yorkshire rivals Leeds United took his tally to six since joining on a short-term loan. However that deal is now finished and the striker is due to return to parent club Norwich.
Now Carvalhal says it is a case of wait and see with regards to whether Owls fans will again see the 28 year old in a blue and white shirt.
"He was my first choice since the beginning and I'm sure he's happy here," Carvalhal said. "He's scoring goals because he's enjoying the way we're playing.
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"I'm not worried. We win games without Gary, we win games without Fernando (Forestieri), we win games without (Barry) Bannan.
"Of course, if you said to me if I want Hooper, Fernando, Bannan, I'd prefer them all to stay, we'd be stronger. The negotiation part is out of my hands.
"I'm an optimist about the situation because the player likes to be here and enjoys the way that we play.
"I advise my technical team but I'm not involved in negotiations. I don't get involved in money or agents. With this, it's in the hands of the chairman."
Hooper opened the scoring just after half time with a scrambled effort, then soon doubled the advantage when United keeper Marco Silvestri fumbled a Fernando Forestieri shot.