If Xabi can win either Bundesliga or Europa League, it's better for Manchester United to hire him and kick the bald guy. Manchester United already lose their legacy as one of toughest team in Premier League. They need to find a good coach who can able to develop the whole team, just like Xabi who wasn't sign many players, but he develop the existing players with a new strategy.
Winning the UEFA Europa League trophy or the German Bundesliga title isn't a yardstick to measure Xabi Alonso's managerial and tactical strength if you ask me because considering what he's already done this season, he's proven beyond every reasonable doubt that he has all the potentials to become a great manager in any top club in Europe. Alonso was able to significantly improve the performance of Bayer Leverkusen in less than three years at the club. Currently Bayer Leverkusen is topping the German league table and if they can continue with their current performance, I think they'll win the league title at the end of the day