Keown wrote in the Daily Mail: "As a lone striker, Didier Drogba was as good as anyone we've seen in the Premier League. Everyone talks about his physicality and strength but he was also very clever.
"I remember watching him play against Arsenal in the FA Cup semi-final in 2009 and what struck me most was his movement off the ball and his intelligence.
"He was so important to the counter-attacking way the club play. With two wingers on either flank, he was exceptional. "