He told The Sun: "It is more difficult to achieve success without money, but it's not impossible with the right attitude.
"Just look at Barcelona. We won the treble this year and proved you can succeed by developing your own players and blending them with one or two expensive signings.
"Yes, they are still a very young team. But they are not inexperienced. They have been playing together for quite a while and are capable of anything.
"But at least they have shown what they can do. With the players they already have at the club, I can still see them winning the league."