The Blues booked their place in the last 16 of Europe’s premier club competition after a 5-0 victory over Bundesliga side Schalke on Tuesday night.
And Ballack, who was part of Chelsea’s side that lost to Manchester United in Moscow in 2008, talked up the west London side’s chances.
“I cannot yet see any weak links, they are really solid and if you judge them after the game today, they can win it,” Ballack told Sky Sports News.
“And if you judge them after the whole season, then they can win it too!
“But it was not the right opponent today, and they know it too, and Mourinho is too experienced to get too euphoric.”
Chelsea beat Bayern Munich on penalties at the Allianz Arena to win their first Champions League crown in 2012.
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