"Osiris Has decided that at this present time he doesn’t wish to feel like he needs to improve for his team. "
Apart from the capital H in "Has" there is nothing wrong with this sentence, lol. You just need basic understanding and reading comprehension.
Alternatively
"Osiris has decided he doesn't want to play for this team anymore"
"Osiris has decided he doesn't have the desire to improve his play"
"Osiris has decided to take a break"
All are much better options than that catastrophe of a sentence. If you think that sentence is ok, there is something wrong with you.
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