Pittsburgh Steelers star wide receiver Antonio Brown reportedly skipped practice on Monday, just one day after he was spotted in a heated conversation with offensive coordinator Randy Fichtner during Pittsburgh's 42-37 loss to the Kansas City Chiefs.

Brown, who finished with nine catches for 67 yards, was also seen walking to the sidelines by himself while his teammates celebrated Ben Roethlisberger's 1-yard TD run in the fourth quarter.

According to Ed Bouchette of the Pittsburgh Post-Gazette, it isn't known if Brown was given permission to skip meetings and film study, but a source indicated they didn't know why he wasn't present.

Brown's absence on Monday came on the same day that he had tweeted, “Trade me let’s find out,” in response to a critic who suggested Ben Roethlisberger is the reason why AB's numbers are so high. The twitter user, whose bio states that he worked PR for the Steelers from 2010-17, tweeted the following: “AB needs to thank his lucky stars, because he was drafted by a team that had Ben. And Ben got AB paid. You know darn well he wouldn’t put up those numbers for other teams."

Bouchette notes that Steelers payers have off Tuesday before reporting back to the facility on Wednesday ahead of their Monday night matchup in Tampa Bay against the 2-0 Buccaneers. 

Of course, Brown isn't the only Pro Bowler who was MIA for Monday's meetings and film study. Click here to see what Le'Veon Bell has been up to while the Steelers prepare for Week 3.