However, despite the unrest surrounding Barton, Warburton has admitted he has no regrets about bringing him to the Ibrox.
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Mark Warburton says he doesn't regret signing Joey Barton
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Joey Barton is under ivestigation by the SFA for allegedly betting on football matches
Asked if he stood by the signing of the ex-Manchester City man, Warburton said: "Absolutely, the experience, the quality was there for all to see.
"I think everyone in football was both surprised and excited by that signing.
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"So I absolutely stand by that signing. We were active over the summer and it takes time to bed them in."