I'm not saying they are planning that but it could still happen. The plan is probably to slowly integrate Cucu (and others like Marlon, Palencia and Alena) into first team and I'm ok with that. There is no need to rush them and possibly ruin their careers at the club.
But at the same time I think Valverde won't be affraid to give a chance to our youngsters and IF Cucu will have a great preseason (and he'll have a hard task going against MSN - and Paulinho
- dailly on trainings and playing against teams like RM and Juve) and Inter offers something like 20M for Digne I think we'll consider selling him and promoting Cucu. Don't know what their current wages are but there is no doubt Digne is paid more than Cucu. And if we can recuperate transfer fee we paid for the Frenchman and also saved let's say 3m in wages by keeping our own kid (Cucu) who would be at least as good right now and potentially better longterm than an outside player (Digne) that's the way we should go. It would also send the right message to other La Masia kids if we'd do that.
I agree it's unlikely that will happen this summer in Digne/Cucu case but if everything goes good it could happen next year. Same could happen with Vidal/Palencia at backup RB position. Though I'd still keep Vidal as backup RW if we'll play 4-2-3-1 and he'll prove to be better in that role than other options we currently have like Deulofeu and Rafinha if we manage to get Dembele next year.
Of course I'd be even more happy if Cucu would show he can be our longterm starter so we could sell Alba (I'm getting tired of his antics) while we can still get good money for him and keep Cucu/Digne for the future.