Andrei Kanchelskis will spend the weekend continuing to consider Albion's offer of a three-month contract.
The former Manchester United winger, based in East Grinstead, has been training with the Seagulls since the start of the month.
The offer has been on the table for some time, but Kanchelskis has attracted interest from abroad including America and Swiss club Wil.
Coppell said: "The ball is very much in his court. We have made our final offer.
"If he decides to sign he will be an asset, if he doesn't I suppose we haven't lost anything because we haven't seen him play yet."
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