Johnny Walker actually has a better ground game than Juri and that is ostensibly what Walker has been working on since his fight with Krylov.
Juri fighting Johhnny Walker (#12) makes the most sense if Juri wants to remain active and the UFC doesn't want to throw him to the wolves quite yet. Yes he beat the #7 ranked LHW but #5 and #2 are fighting eachother in September, #6 (Smith) and #9 (Rakic) are fighting eachother at the end of August, #1 (Reyes) and #3 (Blachowicz) are holding out for a title fight. #8 (Gustafsson) is fighting at HW, Ankalaev (#14) and Rua (#15) are also already booked against unranked opponents.
That leaves Anderson (#4), Nikita Krylov (#10), Misha Cirkunov (#11), Johnny Walker (#12), and Ryan Spann (#13) as the only ranked LHWs who are unbooked.
Cirukov is a submission artist so that would be a bad matchup for Juri. If Corey Anderson were smart he would be calling this guy out since this is a guy who Anderson could have one of his trademark incredibly boring fights with and outpoint, but he is probably waiting for Glover to lose to call him out.
Walker also has a bigger name than Krylov (#10) and Spann (#13) but those three are the only realistic fights the UFC could put together for him unless he wants to wait 3-4 months to fight again.