Meanwhile, Dutch prospect Millen Baars received his clearance earlier in the summer and has already had a positive impact on the Under-18s team.
"Millen was waiting for quite a while as he's been training at the club," added McKenna. "He has had to wait for his clearance to come through but is a really physically impressive player. He is a wide player with a long stride and is really graceful in the way he moves. He strikes the ball well off both feet and we're working really hard to turn him into an effective game player. If we can do that, he's got such good talent."