Green Bay Packers QB Seneca Wallace -- Undergoing Groin Surgery ... Vows to Return to NFL

Green Bay Packers quarterback Seneca Wallace -- who was injured in his first start for the team -- will be undergoing a surgical procedure to fix his groin ... but insists his injury is NOT a career-ender.

TMZ Sports spoke with Wallace who tells us he's simply bummed out about suffering the injury in his first drive during the Nov. 10 game against the Eagles.

Wallace will undergo a procedure to repair his abductor tendon -- and the surgery will most likely take place next week.

Seneca says he'll be sidelined for 4 weeks. The Packers have already put him on the IR list, which means his season is over ... but Seneca says he plans to return to the NFL next year.

"I would love to stay in Green Bay ... but I'll explore all of my options in the off-season."

Wallace says the Packers have been incredibly supportive since he joined the squad -- and have been nothing but classy since the injury.