The 26-year-old has yet to feature for Town this season after re-signing on a free transfer in the summer, but Buckle insisted he was playing a vital role at Kenilworth Road.
He said: “We’ve got two good goalkeepers and Brilly has not had a chance yet in goal.
“He plays a major role in helping Mark perform on a Saturday, he trains hard every day with Dimi (Kharine).
“They push each other and get on very well off the field.
“Dean will get his chance, he’s such an honest lad and a great lad to work with.
“There’s no way I’m letting him out on loan, that’s not going to happen, no chance.”
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