FC27 - Career Mode Happiness player issue

Hello, i dont know is this issue is only in my career mode or maybe someone already tell about this issue. But, everytime my players with status contract Crucial get injured or even get so many injured and tired.. his always unhappy bcs i dont put him as starting player, and when the player decide to put himself in transfer list and then after some match i put him as my important player and the player want to extend his contract, i cannot remove him from transfer list... please EA i dont play online mode so this bug is so annoying for me