Did Arnold Schwarzenegger just invite J.J. Watt to play a T-1000 in the next "Terminator" movie???
Watt's a HUGE fan of the action legend -- and even did an impression of the guy when they met face-to-face at the CMT Awards in Nashville earlier this month.
Well, Arnold liked Watt so much he hooked him up to see an early screening of his new flick "Terminator Genisys" ... and afterward, made an INCREDIBLE offer to the NFL superstar.
"Of course in the next 'Terminator' you have to be the T-1000."
So far, no word back from Watt ... but, c'mon -- there's no way he turns this down.