Holland coach Ronald Koeman has warned Barcelona a period of transition is looming.

The former Barca captain made the claim when discussing his disappointing spell in charge of Valencia.

He told Esporte 3: "In Valencia it was not easy, they had changed sports director many times, but sometimes you have to change. The same can happen in Barcelona.

"Suárez is over 30 years old, Messi is over 30 years old, Piqué is over 30 years old, Busquets is over 30 years old ... They still have a few years left, yes, but later, what? You have to change because they are important positions in the team, the whole spine.

"You will have a goalkeeper, but you will not have a centre back, a pivot, centre forward or Messi. So good luck."