Deco believes Barcelona is dependent on Lamine Yamal and Rafinha.
The Catalan club leads the Spanish league after 35 rounds, 7 points ahead of Real Madrid.
"Suddenly, we felt a lot of dependence on Rafinha and Lamine. We may need players with similar qualities.
It would be good to improve the team, but the main thing is maintaining what we have created in the coming years," said Barcelona sporting director Deco.
