The South Korean appears to have paved his Selhurst Park exit.
Lee joined the Eagles from Bolton Wanderers in February 2015 but has made just 19 appearances in that time.
And there might not be many more in store for the South Korean, who says he will try to talk to other clubs after not getting enough opportunities at Palace.
"(I don't) have any reason to stay here next season," Lee is quoted as saying by the South London Press.
"I have a contract with Crystal Palace until 2018 but I don’t have any reason to stay here next season. I think I should try to talk to other clubs.
"If I had enough opportunities and had disappointed here, I would not make any excuses. But I never had opportunities.
"I’m not playing much, any player would be worried if he does not play. I thought I could play more here but I’m getting all the humiliation I could get through my whole career in this season."
And Lee's comments about Palace boss Alan Pardew - describing him as being too hot tempered and accusing him of making absurd decisions, including forgetting how many substitutes he had left - are likely to accelerate his Eagles departure.
"Pardew is very smart in training but he’s too hot tempered in matches, so he even forgets how many substitutes are left," Lee adds.
"He told me to warm up, then we used all three substitutes, so I sat on the bench again. Five minutes later, he told me to warm up again so I told him there was no substitutes left. He just said: 'Oh, sorry'.
"Pardew also made me train as a starter for the whole week and decided to leave me out on matchday as an injured player who had not trained all week recovered and felt OK on the day. That was absurd."
He continues: "Pardew runs the team with very short-term vision.
"We have a great squad but he plays the same players again and again until someone gets injured. Then his replacement cannot play well because he is playing for the first time in two months. I think that’s why we have not done well in the latter half of season."
The 27-year-old winger arrived in English football from FC Seoul in 2009 and spent six years at Bolton, with whom he was relegated from the Premier League in 2012.
He cites Pardew's apparent desire to sign him as the reason behind his move to Palace, but the presence of fellow wide men Wilfried Zaha, Yannick Bolasie, Jason Puncheon and Bakary Sako, has restricted his first-team exposure.