Liverpool legend Hansen convinced Man Utd job now Giggs' to lose
Hansen wrote in the Telegraph: "United are now at a critical point in their history and they risk football's equivalent of Armageddon if they make another mistake when appointing David Moyes's successor as manager.
"If they get it wrong again, they face the prospect of four or five years outside the Champions League and a new reality of failing to compete for the Premier League title.
"However, the problem they have is that there is no obvious candidate or solution to the big issue of finding the right man to take the job on and restore the club to where they expect to be.
"My belief is that if Giggs can oversee a winning run to the end of this season the tidal wave of support in his favour would make it impossible for United's owners, the Glazer family, to resist calls to hand him the job on a permanent basis."