The only "journalist" (and I use that term lightly) who has reported on Walmsley to Wakefield is someone with a track record of telling outright lies, which is usually something that someone else has told him and he has believed as gospel.
If, and its a big IF Mick Gledhill does talk to agents, they're not daft, they know they can feed him any old tripe and he'll lap it up. It could be a ploy to drive Lachlan's stock up a bit. It's no secret Craig Lingard has a "wish list" of players he'd recommend to Castleford, and he's possibly in for the main job now. Wakefield have been linked with a few players but to my knowledge haven't signed anyone yet, they're talking about throwing money about so will be linked with everyone.