Castle need good couple of signings as their squad nowhere near big or good enough for a run of CL-PL-Carabao-FA Cup. They had no international games this season and that helped them, not the case next season. especially with a tricky group of death scenario likely in CL group for them with their rubbish coefficients. most likely they have something like Barca-Inter or Bayern-Milan or PSG-Dortmund etc plus someone half decent from Pot 3.
and then on the weekends Brighton away, City away, Pool at home. this will test Howe imo more than they are ready for it.
they need top LB, at least two good midfielders, imo a top winger with scoring capability, and thats with hoping Isak-Wilson are good enough in striker department.
Barella at this price imo is a joke, probably a made up rumour. he would walk into Spurs, Arsenal, Pool, rags midfield too.