Motherwell are waiting for Derby to increase their offer for Chris Porter after the Rams challenged Cardiff for the striker's signature.
The Scottish club accepted a bid from Cardiff believed to be around £400,000 but Porter on Thursday turned back on plans to travel to Wales for signing talks after Derby made their interest known.
"Chris has options," Fir Park boss Mark McGhee said on Friday morning. "He can stay here, he can go and speak to Cardiff and we have Derby interested as well, although they have not made an offer yet that we have accepted. Derby have come in with a bid but they have not come in with enough."
McGhee claims County chairman Adam Pearson is preparing an improved package.
Wigan-born Porter, 25, who is out of contract at the end of the season, has been given the day off to consider his future.
McGhee added: "We have not given Chris or Derby permission to speak to each other.
"We will wait to see if they will come in with a further bid. Adam Pearson says that they will but we are still waiting."
McGhee believes Cardiff's offer will remain on the table until the transfer window closes on Monday evening.
"They want him enough that I think they are prepared to wait for Chris to make his decision," he added.
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