I imagine with Walker it would be a loan for the rest of the season - Burton may just want Walker out getting game time and regaining his confidence as he's still young. As quite rightly pointed out, the new manager could impact and certainly slow things down. Tom Hopper is a perfect example: the Cowley brothers come in and immediately confirm Hopper was a player they'd tried to sign a number of times in the past, they start him in their first game and he has a blinder.
Hearing Leyton Orient are one team interested in Walker and they're in League One - so no guarantee, like Harrison Neal, that we'll sign Walker given there's teams higher up the pyramid in for him too.
Waldron, on the other hand, is getting extremely closer. The issue I spoke about with the sell-on fee has seemingly resolved and terms with the player are not a problem - he wants the move. Southend are keen to get it resolved before Saturday's game.
Hearing Dackers is also a distinct possibility - a few people have said he cannot play for another team this season. That's not true. He's only been on loan at Altrincham. Woking was last season.
Hope this answers a few questions