Singleton is not very close with Bobby Hall, from what I have heard. Euell coaches WR's at MC, and is very close to Tobias and Price. He is the one who has brought them to MSU games in the past along with CJ McClain, who used to coach at MC.
Hiring Bobby Hall to coach WR's probably wouldn't be a great idea because he wouldn't last long with Dan. I think one TSUN reference would be all Hall could take. The only person who is a bigger Ole Miss homer is Shep Smith. Not exactly a guy that I would want recruiting for MSU.
Pogue I doubt would be much better in terms of quality. I question some of his tactics in terms of how he has handled Brassell and Market's commitments, something that he handled extremely poorly. How would he handle controversy with a recruit from a D-I school? Tell them to not commit if they're going to take visits?
Euell at least has played WR in college at the D-I level, and he has coached WR's at the high school level as well. He is a young coach, too.