I don't think so. he loses more chance to win UCL next season. I think that barcelona will not able to perform the same like manchester city did next season. Barcelona is bad club when it came to the european competition.
Do you remember when barcelona was losing in UCL last season and it's also losing in UEL too? That proves that if barcelona is not a good team for european competition.
gundogan was making bad mistake. Silva shall not follow him.
Obviously if we talk about the quality between Manchester City and Barcelona, Manchester City is far ahead from Barcelona. Barcelona isn't have a lot money too, so in terms of quality they're lose, in terms of quality, they're lose too. But Gundongan still want to join Barcelona, obviously there's a strong reason involved, what I think he's want to take a challenge and improve his quality.