Value: £39.6million No supporter is glad to see one of their clubs star men sidelined with a knee injury, but Arsenal fans will be praying Mesut Ozil devises a way to return to his scintillating best when he returns to action in 2015. On his day, the wonderfully innovative German can make the Gunners look like genuine Premier League title contenders. At his worst, he's like a kid playing Under-Eights who refuses to run unless the ball is at his feet. Even if Jose Mourinho thinks he's the the best number 10 in the world, the 26-year-old should learn from Chelsea flyer Eden Hazard and commit to work harder off the ball in attack and when his team isn't in possession. Of course, creativity and invention is worth millions alone, but the very best players in the world dont shy away from physical labour. No modern footballer worth £40million can get away with laziness.