Deco insists Chelsea can out-gun Manchester United in tomorrow's big game. The Premier League's top two meet on Sunday, and Deco is backing the Blues - currently top by two points - to extend their lead.
"The big difference between us and United is in attack," said Deco. "Drogba is enjoying a spectacular moment in his career and is superior to the front-line of United.
"For me, Didi will be the key - the star of the match, for sure."
Deco also believes that the game is worth more than just three points.
"This match has a four-point value, an extra one for the blow to United's morale because they also failed to beat Liverpool," he said.
"If they fail in London they will need to think very much about things in the following days.
"Victories in classic matches like this always have enormous value.
"For Chelsea to begin November with a five-point advantage over United will be sensational."