MacPherson told the club's official website: "Dominic got another game under his belt last night and has shown up well in his two outings - we'll have a chat with him.
"Dominic is a central defender who is strong and has a good physical presence.
"He was with Arsenal as a kid and through that he knows our goalkeeper Mark Howard, then he was with Queen's Park Rangers and even though he is now only 20 he has taken part in a lot of games."