Manchester United might just have struck the perfect balance. How would they bring in a new assistant coach who would be willing to work in conjunction with Erik ten Hag? How could they avoid undermining the manager with a new, club-driven hire. And how could they put an end to the uncertainty surrounding Ten Hag’s own future in the process? Well, the potential Old Trafford homecoming of Ruud van Nistelrooy may provide an answer to at least some of these questions. The legendary striker is a confirmed admirer of the man currently sitting in the Manchester United hotseat. Van Nistelrooy and Ten…