Suarez officially completed his move from Liverpool to the Primera Division side last week.
However, the Uruguay international will not be able to represent Barca until the end of the year following a four-month worldwide ban for biting Italy defender Giorgio Chiellini at the World Cup this summer.
"We have to make him better," Bartomeu told Sky Sports News.
"Luis knows, and he said it publicly, he made a mistake. He recognises it, he said he was sad and he explained everything to the player and to the world of football. We will help Luis Suarez to recover from this problem, from this mistake.
"He has the will and he knows what he did perfectly, and if we can recover him I think everyone will be happy, not just our club because we will see him playing with us, but the world of football which needs players like Luis Suarez."
Suarez will be presented to the media next week.