Yorkshire’s out-of-favour quick bowler Oliver Hannon-Dalby is midway through a two-week trial with the county champions, Warwickshire.Yorkshire have given Hannon-Dalby permission to look for another county, even though he is still under contract, after discussions about his future. Whether to offer him the chance to switch to Edgbaston will be the first decision facing Warwickshire’s new director of cricket, Dougie Brown, and bowling coach Graeme Welch.Martyn Moxon, Yorkshire’s director of professional cricket, said: “We spoke to him when we came back from South Africa about his future and his chances of regular first-team cricket. I can’t really say too much because we are not sure how things will go.”Hannon-Dalby, one of county cricket’s tallest bowlers at 6ft 8in, has failed to progress since he made an impact in first-class cricket in only his second match by taking five wickets against Warwickshire in the early part of the 2010 season.Brown said: “He is here with Yorkshire’s blessing, but there is a chance that they might decide to take him on their pre-season tour of Barbados. At the moment, all we are doing is having a look at him.”Yorkshire, who released the former England fast bowler, Ajmal Shahzad, early last season before his contract had ended, have strengthened their fast-bowling resources by signing Liam Plunkett from Durham and and Jack Brooks from Northamptonshire.