Atlanta Falcons star Takk McKinley's Twitter fingers just cost him a chunk of change ... with the team reportedly fining the defensive end over his recent Twitter outburst.
McKinley -- a 2017 first-rounder -- seemingly called the Falcons front office clowns after the trade deadline this week ... claiming the team should have pulled the trigger when he wanted out of town last season.
"These @AtlantaFalcons turned down a 2nd round draft pick when I requested to get traded last year," Takk tweeted Wednesday.
"The same @AtlantaFalcons turned down a 5th and 6th round draft pick from multiple teams when I requested to get traded this year.