Rashad Jennings Says Odell's Got Sick Moves ... But He'd Slay Him On 'Dancing'

There could be a serious battle brewing in the NY Giants locker room ... a dance battle ... 'cause Rashad Jennings says he'd take out Odell Beckham Jr. if they both end up on 'DTWS.'

Rashad previously told us his dream was to do 'DWTS' ... but lately Odell's name is connected to the show ... after he crashed Von Miller's rehearsal and drew rave reviews from Miller's dance partner.

So, when we saw Rashad out in NYC we asked ... if both men got their shot on the same season of 'Dancing' who would come away as the MVP of the mambo?

Check the clip -- Rashad ain't backing down from OBJ ... basically saying the same thing Gabrielle Union told Kirsten Dunst so many years ago.