Allen, now in his fifth season with Gloucester, is currently second in command to Bitcon having previously worked under Mike Anthony in the fitness department.
His expertise is widely recognised and Allen is currently with the England squad as they prepare for the Autumn international series through an arrangement that sees him released to the national team when they are in camp.
Head Coach Bryan Redpath confirmed today:
"Bittaz has done a great job at Gloucester and we'll be sorry to lose him, but we can understand his reasons for wanting to go to Wigan and wish him all the best in his new role."
"Barny has impressed us over a number of seasons and has a wealth of experience having worked under two of the leading experts in the field of strength and conditioning, in Mark Bitcon and prior to that Mike Anthony."
"He has his own ideas about how to help us drive the group forward and we'll give him the right support to achieve this."
"Barny has also been gaining experience at international level with England for some time now so we feel that it's exactly the right time in his personal development for him to be given the opportunity to show us he can lead the strength and conditioning department on a long term basis."
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