Barker has managed to win two games from four matches since taking over, while his two losses were by less than 12 points.
“He is in a unique and ideal position to be able to audition really strongly,” Trigg said.
“To be having the steering wheel is a valuable thing for a candidate.
“In his last five weeks the coaching panel have done a really wonderful job and we’re really pleased with the way they’re going.”
“We’re seeing John at first hand, and he’s doing a very fine job of all of it.”
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