Injury-plagued striker Andy Carroll faces a make-or-break season at West Ham.
The 28-year-old has two years left on his current contract, but he needs to stay fit to stand a chance of earning a new one.
Otherwise West Ham may cut their losses on their one-time record signing next summer, rather than risk him leaving for nothing 12 months later.
Carroll, who cost £15 million from Liverpool, has missed 114 matches through a catalogue of injuries since he signed for the Hammers in 2012.
He is currently fit, however, and poised to lead the line in Saturday's lunchtime London derby against Tottenham.