Michael Gove has put the chances of a Brexit deal at 66% amid fresh optimism over a breakthrough on the dispute over state aid, one of the key sticking points in negotiations. The chancellor of the duchy of Lancaster said the high percentage chance of a deal “sounded about right” when pressed about the talks during a session of parliament’s Brexit select committee. But experts seized on remarks made by the UK negotiator Lord Frost at the same meeting over a potential state aid dispute resolution mechanism. “I imagine we will be as assiduous users of it [dispute resolution] as the EU will be,” Frost said. He declined to detail how this governance mechanism would work but the fact it was mentioned formally was seen as new.