Gethyn Hill, George Morris-Edwards and Tom Llewellyn are the individuals in questions, writes Tom Feaheny.
Hill joined the club from Cinderford Town and has agreed to stay while the other two are products of the academy.
‘I am delighted to have these players in the squad and am sure they will do very well for us," McGregor told the club's website.
"Gethyn is a proven footballer and goalscorer. We haven’t seen the best of him yet but I expect that to happen this season.
"George and Tom are learning their trade and gaining experience all the time. The step up to first team football at this level will give them new skills to provide into the squad."
Picture by Will T Photos