Pittsburgh Steelers wide receiver Martavis Bryant recently requested a trade, reports NFL Network's Ian Rapoport. Sources told the NFL insider that Bryant's "teammates and coaches are well aware that he's not happy." 

In wake of the report, Bryant tweeted: "Big win today and tomorrow right back to work tomorrow I am happy to be a steeler and can't wait to reach number 7 this year," late Sunday night.

The 25-year-old was drafted by the Steelers in the fourth round of the 2014 draft.  

Despite being the team's second-leading receiver, Bryant has started in just two of Pittsburgh's five games this season. Against the Chiefs on Sunday, he had just two receptions for 27 yards.

Also possibly adding to Bryant's frustration is the emergence of  rookie wideout JuJu Smith-Schuster, who the the Steelers took in the second round of this year's draft. Smith-Schuster currently ranks slightly behind Bryant in catches and yards. 

A long, rangy receiving option (6'4") with good speed, Bryant has had a tumultuous career with the Steelers. The Clemson product has been suspended multiple teams for violations of the league's substance abuse policy, including in 2016 when he was banned for the entire season. 

In 26 career games, Bryant has amassed 1518 yards on 91 catches to go along with 15 touchdowns.