Northern Irish under-19 cap Kyle McClelland, who plays primarily as a centre back, joined up with his new teammates at training this week after being announced on the club website on Saturday.
David McCracken said: “Kyle is a promising young player that we’re really happy to have at the club.
"He’s a big defender but is also good technically and we look forward to seeing how he develops over the rest of the season.
"He will bring some great competition to the squad and gives us some extra depth as we go into this vital stage.”
With the window in which lower league clubs can sign loan players being extended it is expected a number of Premiership and Championship clubs will look to send their youngsters out to gain valuable first team experience.
Many will not have played much if any football this year and those who were out on-loan for the first half of the season were recalled when training and games was suspended for all divisions below the Championship.
Having brought in McClelland it is thought that Miller and McCracken’s next move will be to secure a goalkeeper to compete with Robbie Mutch for the number one jersey.
Motherwell stopper PJ Morrison filled that position in the first half of the season and held on to the starting berth for a number of weeks but was recalled to Fir Park as the Steelmen dealt with a shortage of keepers.