Despite their problems this season, Madrid are still able to boast some of the world's best players, and Arbeloa thinks the squad is hard to make better.
"I see a team that's difficult to improve," Arbeloa said.
"There aren't many players who can improve what's already at the club, and I don't like the word revolution.
"This is the same team who won four Champions Leagues. Things don't always go as you like, and the problem is to do with age."