It is a shame for Manchester United that Brendan Rodgers once managed Liverpool. Otherwise I'd see him as the ideal fit to mastermind the long-term project at Old Trafford.
Past associations don't have to be a deal-breaker but they don't help, as Rafa Benitez is finding out at Everton, so Mauricio Pochettino looks the favourite to be in charge next season unless Ralf Rangnick does so well that he has to stay.
Rodgers ticks so many boxes: he has extensive experience but is still young enough to have the hunger and drive to take United forward.