The club also confirmed that Folarin Balogun, Aaron Connolly, James Lea Siliki and Andraz Sporar would return to their parent clubs following the expiration of their loans.
"We thank them all," he said of the players departing.
"From the loan players' point of view it maybe hasn’t worked out as they’d have liked.
"It’s been a difficult period for us on that one, but the other guys whose contracts have expired – Sol, Lee Peltier, and Neil Taylor – they’ve been exemplary professionals for us, both on and off the pitch.
"They’re all fabulous guys and have great qualities so I thank them as well."