Big E Says He's Cashing In 'Money In The Bank' Briefcase On Raw

Tonight's the night ... WWE Superstar Big E is cashin' in, using his coveted 'Money In The Bank' briefcase for a title shot against Bobby Lashley -- or Randy Orton on tonight's Raw.

TMZ Sports talked to E ... and the 35-year-old SmackDown star, holding the 'MITB' case, made the announcement.

"I'm a big proponent of setting your intentions, and I woke up this morning and I said, let me set my intentions to be a world champion here tonight in Boston," Big E tells us.

Of course, Big E won the 'Money in the Bank' ladder match in July ... entitling him to a title shot against either the Raw (Lashley) or SmackDown (Roman Reigns) champ at any moment.

Bobby is set to face Orton tonight ... so, E could wrestle either of the men.

Lashley's the current champ ... so we asked him if he had a message for the Raw champ.

"First and foremost, Bobby needs to worry about a certain 14x world champion in Randy Orton, who's trying to become a 15x champion tonight. so he's got that to worry about. so my message to bobby is worry about that apex predator first. Just know, I'm here. I'm in the building."

Why tonight on Raw from Boston??? We asked E.

"Why tonight? Why not tonight? Boston. Heckuva town. Kofi's from here. The fact that Kofi and Woods are both present. My sister lives here. I have extended family that lives here."

So, fam's here, Kofi and Xavier, but can he win the belt?!?

Stay tuned ...