Sterling was gotten on Loan from Chelsea. The term was that if Arsenal loves his performance by summer, they will buy him but with the way things is i don't think Arsenal will want Sterling. He will be returned to Chelsea not minding the fact that he loves to play at Arsenal.
For the players who might be on the list for Arsenal to sell to raise fund i am suspecting Trossard (He also said he might want to leave the club), Jorginho; One of Arsenals best defensive midfielder but he has aged a little so Arsenal will be willing to let him go. Another player is Tierney, Thomas Partey and Fabio Vierra who was sent on loan to another club.
However, the Arsenal board will be blame if Arsenal don't win a title next season. I expect that aside from selling players to raise fund the club owners should give Arsenal enough funds to get players who will help win trophy.
I was one of the persons who was happy with the Raheem Sterling deal, a move at the last minute said to be a backup plan for Bukayo Saka which unfortunately hasn’t gone as expected. Raheem Sterling has obviously performed below expectations, there is a huge doubt that he will be signed at the end of the season. I think Arsenal will look at other options instead to strengthen their squad in the summer.