Manchester United coach Ryan Giggs can understand Liverpool midfielder Raheem Sterling fearing burnout.
Sterling has caused controversy after telling England coach Roy Hodgson he was 'too tired' to face Estonia on Sunday.
"It's tough when you are a young player and he is an explosive player," Giggs told Sky Sports.
"He is a player who is exciting and a player you would go and pay and watch. Of course, he is at Liverpool, who are obviously our biggest rivals.
"He is a talented player. You have to be careful when you are a young player - it is a short career."
