Vermaelen feels it necessary for manager Arsene Wenger to have options and is happy that all the central defenders at the club are fit and healthy.
"The boss has a lot of choices at the moment, and all of the centre-backs are fit which helps too," he told the club's official website.
"There's a lot of competition and that can only be good for the team.
"It's good to be able to rest players when they need it, so I don't think it's a problem if we have to rotate because we train together all the time.
"We know each other's qualities, so it doesn't matter who plays on the day."