There are four major issues here.
1. Ole has defended De Gea all season, even after shambolic performances. He even mustered enough courage to say a few weeks back that he is convinced De Gea is still one of the best goalies in the world. Once you stick with someone so strongly, it is difficult to eat your own words and that too for only a handful of matches that remain.
2. De Gea is on a bumper contract - £375,000 - for two more years. Moving him on is close to impossible in this economic climate. And on top of that, if you drop him for Romero for the most crucial part of the season, what happens to his valuation? Ed would no longer be able to fool any Spanish club, which he still could! The United board would still be hoping that De Gea can play “first team” football for two more years.
3. I don’t think Romero is any better.
4. Dean Henderson is only a marginal upgrade. He is not world class by any stretch of imagination.
There is no plan B for next season. United clearly need a world class keeper. Having two keepers on a mammoth payroll is difficult. This is one of the big transfer tests for United after the season ends.