They need to find a way to do this, because if Marcus Rashford is signed, there's a need for him. If you're signing a player you can't play, there's a problem. Barcelona needs to get rid of players with excessive wages. This suggests they'll be selling some players during this year's transfer window. They could use the freed-up salary cap on Marcus Rashford.
Not so quick, Rashford came to Barcelona on a loan, so they can not start putting out player because of him, if it wer to be that they bought hi fully already then that cn apply they will only allow for rotation them if they see he need to trigger the buy clause for rashford, then they may proceed to selling other player to create the space and reduce contempt. Barcelona is even broke so I doubt of there is anyone in the team currently been paid excessive wages and would want to go or even Barcelona wants to loose