Barnsley will continue talks with Daniel Bogdanovic after the striker turned down an improved contract offer from the club.
The Malta international, who has netted 14 goals this term, has already attracted the interest of three unnamed clubs but the Tykes are hopeful of retaining his services.
Director Don Rowing told the Sheffield Star: "Daniel refused a very good contract. We've reviewed our offer more than once but Daniel didn't want to sign it. It is disappointing."
He added: "He wants more money than we are prepared to offer at this stage. We have to be prudent - at no stage would we compromise the position of the club. Daniel has done really well and scored some important goals but the deal has to be right for both parties.
"The Football League recommend we should tell players where they stand by the third week in May so we've still got plenty of time to sort things out. Most contracts finish on June 30, so really rushing contracts through at this stage makes a mockery of the agreements that are in place.
"This stage of the season is very difficult because a lot of players are holding out for new deals but at the same time they want to know their future is assured. It's a fine balancing act."
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