The Scotland international has finally committed his future to the Whites after a prolonged saga, and there is some mixed reaction about it.
The 29-year-old, who handed in a transfer request last month amid claims that he wanted to play in the Premier League, has been convinced to commit his future to the Craven Cottage club until 2020.
McCormack is the third most expensive signing in Fulham's history after joining the club from Leeds United in a deal worth nearly £11 million in 2014.
The Scotland international has been a vital player for Slavisa Jokanovic's side this season, netting 18 goals in 36 appearances in all competitions.
He was linked with a move to promotion-chasing Middlesbrough last month, but after failing to secure a move away from London he has extended his current deal with the side by agreeing to be contracted to the club until just before his 34th birthday.
Fulham fans were understandably unhappy with McCormack's perceived desire to move away from the club last month, but judging by some of the reaction on Twitter, this latest news has drastically changed the mood amongst some supporters.
Below are some of the more positive responses to the striker's new deal.
However, others were none too pleased about the striker being rewarded after angling for a move away in the January transfer window, with some fans criticising the player and the club for the move.
@FulhamFC du du du du Ross Mcontract .... He couldn't wait to be outa there this time last month— Blain (@BlainAllinson96) February 25, 2016