Cesc Fabregas is likely to recover from a hamstring injury in time to start at the Nou Camp but in his programmenotesthe Gunners captain urged Arsenal to focus solely on Sunderland with the title race "in our hands now".
Writing in Sunday's programmenotes, Sullivan announced that the club will look to make "five or six" signings over the summer in a bid to avoid a repeat of this season, which has seen the east Londoners finish only five points above the relegation zone.
No country allowed evidence from spies to be heard in public, he told Radio 4's Today programme, as this would lead to "terrorists sitting inthe public gallery and taking notes".