The Blaugrana supremo believes that the Brazil international has what it takes to make an instant impact at Camp Nou.
The Catalans announced at the weekend that they have reached an agreement with Santos over the summer transfer of the 21-year-old, who will sign a five-year deal on Monday, and Rosell is confident that Neymar will strengthen the team.
"Each year we try to improve the team and we believe that Neymar can help us with our style [of play], even though this year has already been fantastic," Rosell told TV3. "We don’t sign players to mess people around, we do it to improve our team even more."
The Barca president then went on to say that the club has yet to set a date for Neymar's official presentation as the attacker will play with Brazil at the Confederations Cup.
"We have to talk it over with the Brazilian federation," he said. "We’ll present the player as soon as possible. The important thing is that we have an agreement."
Neymar had also caught the attention of Real Madrid, but eventually opted to join Barcelona in a deal worth 28 million euros.