Barcelona midfielder Sergio Busquets believes next season will be more difficult.
Barca go into the campaign as Liga and Champions League winners.
Busquets told Barca TV that they are still looking to go to the next level and enthused: "It will be difficult to improve [on the last three years] but we have the motivation to do so.
"What this team has accomplished in the last three years has been very good. We have won everything. It is also true that next season will be even more difficult. Everyone will want to beat us in every game and every match will be like a Cup final."
The Spanish World Cup winner also stated that Guardiola has an excellent crop of players to work with and stated: "The team is already complete. We have a very good squad.
"I do not know if we need any further signings because we already have a squad that can cope. It is also true, however, that any new players would be important for us and I think we should have some patience regarding this situation."
