McCall said: "Should these guys ever have been sent here? Well, with Bigi being unable to play that's a no-brainer.
"With Shane, he was on his way back but had a little setback.
"But I think if you look at it in all honesty, anybody who comes up for a six-month loan should have a medical - obviously that was not the case.
"If that had occurred, two or three of the loans may not have happened. But none of the players are at fault here.
"Shane has not been up but the rest come in and train as hard as they can. They are doing their utmost to be involved."