Chelsea have been spending heavily on young players this summer and I think Marc Guiu is the one who most interests me. As is known, Marc Guiu is a product of Barcelona's La Masia academy and last season, if I'm not mistaken, he played several matches with the first team.
However, overall he is actually quite a promising player but indirectly it is also difficult for him to get a place in the first team so Barcelona let him be sold and Chelsea also want to redeem his clause which is quite cheap at 6 million euros. His position is attacker and it feels like if Enzo Maresca can develop his potential better then he could be a solution for Chelsea in attack. Marc Guiu also has a contract duration until 2029 and it is a long-term project for Chelsea for him.
This is what they should have done ever since and not splashing lots of million of euros on big players that weren't delivery what they have played for. I believe spending money on young players is actually a good move for Chelsea atleast these youngster's would evolve and grow with the team well that's if the coach is capable enough to actually work things out.