Chesterfield manager Paul Cook wants to take another look at former Middlesbrough striker Gary Martin, who has been on trial at the Sky Bet League 1 club.Martin, released by Boro five years ago, has spent a week training with the Spireites and will be invited back to the Proact Stadium in January.
"He's done well. He's looked really, really bright," Cook told Spireites Player.
"We haven't been able to see him play in a game. We had a game planned on Tuesday away at Leeds but we had to call it off, due to the suspensions and the injuries that we have now - we really couldn't risk any more.
"But Gary has done well. We are going to invite him back after January and we'll have a look at him again, because we are after that extra striker and more goals at that top end - it's what we're screaming out for.
"I do believe that elsewhere all over the pitch, we are a match for any team in the league."
Martin has recently won a league title, two domestic cups and a Golden Boot award with KR Reykjavik in Iceland. The 24-year-old has also played in Hungary.
Meanwhile, Chesterfield defender Jack Broadhead's spell on loan at non-league Frickley Athletic has been extended until January 17, 2015.