The former Ross County and Queen of the South man had turned in some decent performances in midfield in December, but the arrival of Andy Dorman saw him dropped - first to the bench, then from the squad. The fact he's been loaned out suggests MacPherson has already decided to get rid of him in the summer - and chances are he won't be the only one playing. Of course, he could turn in some Cristiano Ronaldo like performances in the first division, but it's unlikely!
Burke can make the move despite the transfer window being closed as the SFL allows clubs to make some rather suspect "emergency" loan signings. God knows what sort of emergency Alex Burke can solve!
Story source: The Official St. Mirren Website