Enes Kanter seems pumped about joining the Boston Celtics, but until Wednesday, he wasn't technically a member of the C's.

That changed just after noon ET, as the Celtics announced they've officially signed the free-agent big man.

Kanter's deal reportedly is worth $10 million over two years, as he joins point guard Kemba Walker on an overhauled Celtics roster following the departures of Kyrie Irving, Al Horford, Marcus Morris and Terry Rozier in free agency.

The 27-year-old, tweeted out a video of him signing the contract at the Auerbach Center in Boston, telling fans his signing is "the first step to a championship."

Kanter, who will wear No. 11 for the Celtics, comes to Boston after averaging 13.7 points and 9.7 rebounds per game last season between the New York Knicks and Portland Trail Blazers.

"Enes demands a lot of attention on the glass at both ends,” Celtics president of basketball operations Danny Ainge said in a statement. “His ability to get easy baskets in the paint is a problem for opponents. I believe he has a chance to progress as a perimeter shooter.”

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