San Francisco 49ers quarterback Brooke Purdy He suffered a torn ulnar collateral ligament in his right elbow, a source told ESPN’s Adam Schefter on Monday.

Purdy is seeking a second medical opinion on whether he needs surgery, which the 49ers are recommending, a source told Schefter.

Regardless of the decision on the injury, Purdy is expected to be sidelined for six months, the source told Schefter.

The Niners lost Purdy for their sixth offensive tackle in Sunday’s 31-7 NFC Championship Game loss to the Philadelphia Eagles. After initially being considered doubtful to return, he had no choice but to enter his replacement — the fourth-string signal-caller — in the third quarter. Josh Johnson — removed in shock.

Purdy suffered the injury with 7:03 left in the opening quarter. On second-and-6 at the 50, Purdy dropped back to throw, looking for a wide out Brandon Ayuk Down on the left side. With a clean pocket and time to throw, the Niners believed it would be a big game. Eagles pass-rusher Hassan Reddick He ruined those plans, running with a tight end from the Niners Tyler Kroft And when he tried to throw it, he hit Purdy and loosed the ball.

On the return, Purdy threw a short screen pass to the running back Christian McCaffrey For 3. He only attempted one more pass, a short dump off to Kittle for 1 gain. Purdy finished 4-of-4 for 23 yards with an average of 1.5 yards per carry. That stat is the lowest average by a starting quarterback in a playoff game since it was first tracked in 2006 and is the second lowest this season.

ESPN’s Nick Wagoner contributed to this report.