Alex Galchenyuk for Josh Bailey? Younger, has demonstrated more goal scoring ability earlier in career, Natural C, but not exactly the kind we are looking for
Jason Zucker for Josh Bailey? Pure LW where are currently logjammed -not a faceoff guy, but does pot goals at a higher clip
Jaden Schwartz for Josh Bailey? Pure LW where are currently logjammed, no way StL moves him for Bailey, I think most would view him as the better player
If anything I could see deal around Beauvillier ++ made for those players, though the plus would have to be significant for Schwartz who is having a bad season, he was nearly a PPG last year, 59 in 62. I don't think the Blues would give him up unless they got overpaid.