Birmingham City have completed the signing of Northern Ireland under-21 international Robin Shroot.
A nominal fee has been paid to AFC Wimbledon, who held the midfielder's registration.
Shroot, who caught manager Alex McLeish's eye during a short trial period at Wast Hills, has signed a two-and-a-half year deal, with a 12-month option.
The 20-year-old joined Harrow Borough in the summer but was a non-contract player.
Shroot has been given the squad number 32 and he is eligible for today's FA Cup tie against Wolves.
Blues' other new signing, Keith Fahey, has missed out on the third round tie. As Blues sought international clearance from the Irish FA, club secretary Julia Shelton was informed that the former St Patrick's Athletic midfielder still had a one-game suspension hanging over him from the end of the League of Ireland season.
Chinese midfielder Shao Jiayi has said that he is waiting for Blues to get in touch after his recent trial.
The international, who is out of contract at German side Energie Cottbus in the summer, scored a superb 30-yarder in a reserve friendly against Cheltenham Town.
He said: "I was happy with my performances. I think I have achieved the goals I set prior to coming.
"Birmingham are to contact me as to whether they want me or not. I am not anxious about the wait. My job was to perform well and now the club's task is to make the transfer decision."
Goalkeeper Artur Krysiak has joined Motherwell on loan until the end of the season.