Harry Redknapp accepts keeping his players fresh during the second half of the season will be vital to Tottenham's chances of keeping their title hopes alive.

Spurs missed an opportunity to keep themselves in touch with leaders Manchester City last week when they drew with rivals Chelsea 1-1 at White Hart Lane. The game provided a worry for Redknapp with Rafael van der Vaart substituted at half-time due to a hamstring injury, but a subsequent scan revealed no serious damage.

"Managing the squad and keeping them happy is probably my toughest challenge. It's not easy," the veteran boss said.

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