
Like i said, Barcelona has no choice other than sell one of their player to create empty spot for Rashford. Impossible for them to register him at this moment because they may be violated FFP if it happens. They can't also use the backdoor like when they register Olmo for temporary.
However, it's not a proble for Rashford consider he will still receive his salary even when he's only warming the bench.

What really happens to Barcelona that they are still in this type of mess?
If am not mistaken this has lingered for five seasons now, or is their financial Crisis for ever?
I heard that they are still owing the likes of Lionel Messi, Coutinho and de jong. I seriously don't know what happens that got them in this difficult financial situation but what I know is that anyone that is in charge of their finance that put them in such a difficult financial state is very incompetent, because any wise person would have known that you only spend base on what you can afford, and forget about what others are doing.
As for Marcos Rashford, I think that they are going to do something so that they can register him because they can't just let him stay like that, no, it makes no sense.
Nothing improved from Barcelona's financial. Their wage cap reduced so hard. It's forced them to register limited players. That's why they unable to register Rashford caused by they will be surpassing their wage cap if they register him.
It's understandable Barcelona wants Rashford to add more depth on their LW position, but the decision to sign him is not wise.
They have no choice other than get rid one player from their squad to decrease their wage gap.