CLEVELAND, Ohio - Iman Shumpert, a restricted free agent come July 1, gave the Cavaliers all he had as he essentially played the last four games of the postseason with one arm.

He was shot up with painkillers before Game 4 of the NBA Finals in order to continue playing through the excruciating pain of a bruised shoulder, a source revealed, and he may have been injected more than once during the Finals.

He will not need offseason surgery, just rest and treatment.

In Game 3 against the Golden State Warriors, Shumpert was blindsided by a Draymond Green screen in the first quarter, reinjuring the left shoulder he dislocated at the beginning of the year when he was a member of the New York Knicks.

The initial fear was that he separated his shoulder again, but a thorough evaluation disclosed a deep bruise.

Though he was still in agonizing discomfort, he returned to the game in the second quarter. An MRI exam the next morning confirmed the bruise. Had it been the regular season, I'm told he would have been sidelined 2-3 weeks.

He was also battling a sore left groin, but Shumpert wanted to play. This was the NBA Finals. The Cavs needed two more wins. The roster was depleted enough already, so he did what he had to do. He stuck it out and fought through the pain. His offensive game was limited due to his ailments, but he continued to play his patented tenacious style of defense.

His relentlessness, his toughness and willingness to lay it on the line characterized the Cavaliers' persona. General Manager David Griffin is extremely fond of Shumpert and plans to retain him. He loves his work ethic and competitive edge, but so do others.

The Cavaliers will have the right to match any offer sheets Shumpert receives on the open market. At 24 years of age and following a rejuvenated season, he will be in store for a lucrative pay raise from the $2.6 million he collected this past season.

Half a dozen teams have expressed interest in the quick-handed, defensive-oriented guard with upside, a source says. League executives believe he'll command north of $8 million per year.

LeBron James was asked during the Eastern Conference Finals why the Cavs' defense was clicking so well, and he praised his backcourt mate for the improvement.

"It starts with this guy," James said in reference to Shumpert. "He will be on the all-defensive team in this league really soon."

Shumpert's grit and determination is going to pay off. The Cavaliers just hope they'll remain his employer.