Millwall midfielder Adam Bolder is training with Burton Albion as manager Paul Peschisolido considers signing two other trialists.
Bolder is reportedly trying to negotiate a release from his contract at Millwall and has been linked with a move to Gillingham.
He has joined up with Burton for training this week, but Peschisolido refused to confirm whether he wants to sign the 29-year-old.
"Adam has joined us for training to keep himself fit - that's all I can say at the moment," Peschisolido told the Burton Mail.
Meanwhile, the Burton boss was impressed with the contributions of trialists Garyn Preen and Lewis Young during Saturday's 1-0 friendly defeat to Derby.
Peschisolido is looking to finalise his squad for the forthcoming season in the next few days, and the wide duo did their chances no harm against the Rams.
"They both did OK against better opposition than we've so far seen, and they've given me something to think about," he added.
"Garyn has ridiculous pace and is quite a strong lad who tracks back and has a good work ethic. Lewis also went past people, and only let himself down on a couple of occasions with his final ball. I quite like them both."