After officially announcing his retirement through The Players' Tribune on Tuesday, a lot of current and former NBA players congratulated Ray Allen on his stellar career.

Allen won two championships over his 18-year career and became the league's all-time leader in three-point field goal's made. He'll also be forever remembered for the game-tying three he made during Game 6 of the 2013 NBA Finals, which helped the Miami Heat win the championship that year.

But even with the numerous greetings he received, one former teammate gave a different reaction when told that the 41-year-old finally decided to hang-up his sneakers for good. That would be current Chicago Bulls point guard, Rajon Rondo.

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Rondo played with Allen for five seasons during their days with the Boston Celtics. The pair won a championship together in 2008. They formed one of the best backcourts in the NBA at the time and were key pieces to the team's success.

It's quite understandable that Rondo was surprised to find out that Allen just retired now considering he had not been on any team's roster the past two seasons.

Rondo also added that Allen “had a hell of a career.”

Although there were a lot of rumors that Allen was being recruited to join some contenders like the Cleveland Cavaliers, Golden State Warriors and L.A. Clippers, nothing materialized and he remained a free agent the past two years. Many believed that Allen could still contribute and provide quality minutes off the bench, but he did not find any offer enticing enough to make a comeback.