Former Coventry City midfielder Sammy Clingan is training with Doncaster Rovers.
The Northern Irish international, whose contract at Coventry City was allowed to expire, had been at Charlton Athletic but did not do enough to persuade the South London club to offer him a contract, so he is trying to win a deal at Doncaster Rovers.
Two former Coventry City players scored on Tuesday night in Football League matches.
Marlon King hit a hat-trick for Birmingham City as they came back to earn a 3-3 draw at Millwall.
Aron Gunnarsson hit a stoppage time winner for Cardiff City in a 2-1 win over Watford.