There has been tension with directors Franco Baldini and Walter Sabatini, while it's unclear how important the captain is to the plans of boss Luis Enrique.
"A new championship starts on Sunday, a championship that begins later than in previous years," he said.
"As always, I hope that the season ahead presents great satisfaction to our fans.
"Finally the squad will be complete after the return of the international players and we can begin to play football.
"We'll have a lot of new players and all of us will have to rally around our new Coach, the team and the club to start the campaign in the best possible manner.
"All of us will do this together and with one objective which is Roma, of which I am their biggest fan.
"We'll all be waiting for you [fans] at the stadium to support us as you always have and I'm sure that we'll give you joy.