(Washington re-signed Rex Grossman today.)

I guess this thing has legs now and even the skeptics have to lean back and read these words and wonder: Pat White is back in the National Football League.

That pro day workout in Morgantown last month must have looked to the invited audience because he quickly lined up another workout in front of more scouts at Virginia Tech and then had a short list of meetings with NFL teams.

Tuesday, he signed with the Redskins and, man, George Whitfield must be a wizard.

Where does it go from here, though?

Realizing you have to suspend your disbelief at this point, let’s still understand that he’s not going to be the starter. Robert Griffin III is there and is the future of the franchise.

True, he has a serious knee injury that we know takes time to rehabilitate, but there is also Kirk Cousins, who proved more than capable last season and was basically drafted very early as insurance.

Then there’s Rex Grossman, who once had the confidence of the coaching staff to be the starter.  Grossman is a free agent, though, who will command a salary higher than White’s. That’s not insignificant and teams don’t keep four quarterbacks.

White has a place, though the capacity is unknown.

He might be an extra arm and set of legs in practice either until or as RG3 recovers just to keep the specifics of the offense in place and sharp. If he can’t go during training camp and/or preseason games, White gives the Redskins a similar, though not superior look.

He might be the backup, or a backup, or the co-backup, who can keep the offense on the tracks if RG3 misses plays or weeks, either filling in during short duty or throwing a changeup if Cousins plays extended time in RG3’s place.

He might be a useful practice piece. The NFL is expanding to incorporate players like White and the plays he can run. The Redskins play the San Francisco 49ers and Colin Kaepernick as well as Chip Kelly’s Philadelphia Eagles. While it wouldn’t be his sole purpose, White could be good for the scout team.

Or he might be a commodity. NFL teams collect pieces and the Redskins may have been willing to gamble at a low cost. If it works and White’s comeback clicks, he could be sent somewhere else for a more valuable asset.

Or he could replace Cousins, who is perhaps expandable, though there aren’t many teams that need a quarterback now and fewer that would part with a draft pick they could use in the draft. Still, if it happens and an injury forces a team to call the Redskins for Cousins, a capable White could give the Redskins a decent safety net.