Xavi believes it would be "fair" for Manchester City to complete the treble insisting they are "the best team in the world".
The Barcelona boss, who is on the cusp of delivering the LaLiga title in his first full season at the Nou Camp, has waxed lyrical over City, who are coached by his former mentor in Pep Guardiola. The Catalan won his first treble with Xavi in his midfield at Barcelona in 2009.
Guardiola has gone on to pick up regular trophies throughout his career, winning at Bayern Munich and now City. He could yet be the second man in English football to deliver the iconic treble, following on from Sir Alex Ferguson, heading into the final weeks of the season.
