Sources: In wake of Kyrie Irving surgery, Celtics to sign guard Jonathan Gibson for rest of season

In the wake of losing All-Star Kyrie Irving to a second knee surgery, the Boston Celtics plan to sign point guard Jonathan Gibson for the remainder of the season, league sources told Yahoo Sports.

Irving will undergo surgery on his left knee Saturday and is expected to miss four to five months, the Celtics announced Thursday. The Celtics had a need for a point guard and are down to Terry Rozier as the starter and Kadeem Allen, who is on a two-way contract.

Jonathan Gibson played with the Mavericks in 2016. (AP)

Gibson, 30, will provide guard depth for Boston, which is is 53-25 this season and has a firm grip on the second seed in the Eastern Conference.

Gibson played in the Chinese Basketball Association this season, averaging 33.7 points per game for Qingdao. The 6-foot-2 Gibson played for the Dallas Mavericks in 2016-17, scoring 6.2 points in 17 games.

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