Neither him nor Bentancur could be anything more than a veteran presence for a team that already have their XI sorted. If Bergvall and Gray were at their peak selves at 25 and were running the show as first team regulars for example,having someone like Palhinha come off the bench once in a while to kill a game off would be tolerable. Think of Kane and Llorente.
As things currently stand, with Gray and Bergvall being teenagers that are not ready for first team football, these average veterans heading towards the wrong side of 30 are redundant. They inevitably will get more minutes than their abilities justify due to the state of their alternatives.
Have to get rid of them altogether, relegate Gray and Bergvall to roles more commensurate with their current level, and sign as soon as possible at least 2 deep midfielders that would walk straight into the team.