Gillingham manager Mark Stimson has accused some of his players of using excuses to escape training, and says they may not play for him again.
"It is unthinkable. Players have been told how important these sessions are, and have then missed them," Stimson told BBC Radio Kent.
"They'd have to do something out of this world to get back in my plans."
The training schedule was set up as Gills looked towards games against the bottom two in League One over Easter.
It's good in some ways, they've shown me they don't want success as much as I do
Gillingham manager Mark Stimson
Gillingham's defeat at home to Crewe left them four points from safety in the relegation zone. Stimson said wins against Bournemouth and Port Vale were vital to their fight against the drop.
"It's been a testing time, and what you need is people around you who are going to roll their sleeves up.
"When there are players who aren't there, and they can be key players - experienced players. It makes me think 'roll on the summer'," Stimson added.
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