Dre Greenlaw's debut for the Denver Broncos has resulted in the linebacker being sidelined yet again.

The NFL on Monday suspended Greenlaw for one game for unsportsmanlike conduct, saying he had chased after Brad Allen and "verbally threatened" the referee following a 33-32 win over the New York Giants .

Greenlaw appeared to find Allen in the immediate aftermath of Wil Lutz's 39-yard game-winning field goal as time expired, which capped a 33-point fourth quarter for Denver . Allen threw a flag after Greenlaw appeared to say something and point at him.

Greenlaw has three days to appeal the ruling. If the punishment stands, he will miss Sunday's game agains the Dallas Cowboys.

After signing a three-year, $31.5 million contract with the Broncos this offseason, Greenlaw was expec

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