Coupland, 24, had two years to run on his existing contract, but has signed an extension signaling his commitment to Welton for the forseeable future.
The midfielder, who has scored 87 goals in the last two seasons since joining from Cherry Willingham in 2007, told the club's website: "The chairman knows my thoughts on what I love about this club. I respect everyone so much and hopefully I am here for a long time."
"I Love everything about this Club and I would never dream of going anywhere."
"I want to go on and win more silverware this Season and in the coming seasons."
Coupland is many peoples tip to succeed Neil Stocks as Captain should Stocks protracted move away from Social Park materialise.
“I got the armband a couple of times last year when Neil wasn’t playing but I’m not thinking about that at all.”
“I am happy that my future is sorted and I am fully focused on mounting a serious title challenge next season and I want Neil (Stocks) to be in the team with me.”
“A lot has been said and if he does want to leave for whatever reason then that is up to him and we have to respect his decision.”