...So, with this in mind, Barcelona will certainly follow Hansi Flick's every directive, including forbidding the sale of Fermin Lopez. Selling Fermin Lopez would certainly leave Barcelona with a small gap. Because Fermin is also a very important player for Barcelona. So, if Barcelona needs money right now, I think they need to be more patient. Because Barcelona currently needs to prioritize its own performance first. If they can achieve even better results, their finances will undoubtedly improve.
Although he doesn't always play as a starting eleven, Fermin Lopez's role at the club is significant, and his versatility is excellent. He can play as an attacking midfielder, central midfielder, and left winger. So far, despite often being a substitute, he has made a significant contribution, with at least 8 goals and 10 assists in limited minutes. Unfortunately, he has suffered several muscle injuries. 
Source: Fermín López