Keenan Allen will miss the rest of the season but is expected to make a full recovery with a lacerated kidney, a source said Tuesday.

The Chargers wide receiver was injured Sunday on a 13-yard touchdown against the Ravens . He joined the team on its flight back to San Diego from Baltimore but was hospitalized that evening when his symptoms worsened. Allen underwent what was described as a minor, non-surgical procedure Monday to stop the bleeding, and he remained hospitalized as of Tuesday morning. He'll be placed on injured reserve in the afternoon.

Allen, 23, caught 67 passes the first eight games.

That is tied for the third-most in NFL history. He also totaled a team-high 725 yards and four touchdowns, the latter shared with tight end Ladarius Green for the team lead.

Teammates have visited and shown support for the veteran, someone who'd exhibited increased maturity in his third season. His practice habits were more focused. His weight was trimmed down. Even before a breakthrough season that now has been cut short, Allen distinguished himself this year around Chargers Park with many predicting the increased production that was to come.

Next year will be the final season of his rookie contract.

Terms of that deal, which features a $675,000 base salary in 2016, figured to be discussed next year, considering Allen is scheduled make a full return and certainly has outperformed a contract that was slotted to him as a 2013 third-round pick.

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His kidney injury came when he landed hard while securing a touchdown in traffic, late in the second quarter. He did not return.

"Gotta catch it!" Allen wrote on his official Instagram account Tuesday. "That's the only thing that was going threw (sic) my mind. I appreciate all the love and prayers from you fans. Lord knows we couldn't do it without you guys. Friends and family have been loyal since day 1. Thanks again to everyone!"