EAST RUTHERFORD, N.J. -- New York Giants running back Saquon Barkley received a second opinion on his injured ankle and will not be placed on injured reserve, per coach Pat Shurmur.

Barkley is expected to miss four to eight weeks with a high ankle sprain, a source told ESPN's Adam Schefter earlier this week. The longer time frame is considered more likely, the source said.

But the Giants don't currently plan to put Barkley on IR. That would automatically sideline him for eight weeks. There is at least reasonable hope he could return sooner.

"At this point, no. ... I want to be clear, [plan] doesn't involve putting Saquon on IR," Shurmur said.

Barkley was examined by Dr. Martin O'Malley in New York and received a second opinion Tuesday from Dr. Robert Anderson in Green Bay on the ankle. Surgery was never really an option.

"Rehab him and get him ready to go," Shurmur said. "See how that plays out."

Wayne Gallman is expected to start in Barkley's place and carry the load in his absence.

The Giants (1-2) weren't willing to put a timeframe on Barkley's injury. Shurmur noted the uncertainty with high ankle sprains as his reasons.

It's expected that the Giants elevate a running back this week. Gallman and fullback Elijhaa Penny are the only healthy backs currently on the active roster. Rookie Jon Hilliman is expected to get the call.

None are Barkley. The second-year back won Offensive Rookie of the Year last season and was off to a strong start this year. He topped 100 yards rushing each of the first two weeks.

Barkley had 37 carries for 237 yards with a touchdown prior to the injury, which occurred in the second quarter of a 32-31 victory over the Tampa Bay Buccaneers on Sunday.

He was injured when his right ankle bent awkwardly while he was tackled by Bucs safety Mike Edwards. Barkley limped to the sideline, where he was immediately attended to by trainers.

X-rays were negative but he spent the second half of the contest on the sideline with crutches and in a boot. Barkley told ESPN after the game that he suffered a similar injury during his freshman season at Penn State and missed two games.