Sunil's agent and Coventry could have done better than give him just a couple of days' trial," Bhaichung Bhutia said to The Times Of India.
"Coventry did not give him a fair trial. He was there for six days but during that time, the club was playing the league matches. That left him just two days to train with the squad.
"I don't know why Coventry called him now in the middle of the season. They could have seen him in the summers," added Bhutia.
Chhetri's agent Yogesh Joshee also came in for some ticket with Bhutia saiying: "It's normal for somebody getting a call to train abroad getting excited but it was the duty of Sunil's agent to advise him better. After this incident, players should be more careful".