The Boston Celtics have signed Jamar Smith.

Smith, a 6’3” guard, appeared in 44 games last season for BK Prostov in the Czech Republic and averaged 14.8 points and 2.5 assists while shooting 39.3% from three-point territory during league games.

Smith also appeared in two games during EuroCup qualifications and in six games of the EuroChallenge. Smith played for the Celtics during the 2012 Orlando Summer League and averaged 9.2 points while shooting 45.0% from three. Smith was previously with the Celtics during training camp prior to the start of the 2010-11 season. Smith previously played for the Maine Red Claws of the NBA Development League. He played collegiately for the University of Illinois and the University of Southern Indiana.

The Celtics have signed Dionte Christmas.

Christmas, a 6’5” guard, appeared in 26 games during the 2011-12 season for AGO Rethymno Aegean in Greece and averaged 18.6 points, 4.4 rebounds, 3.0 assists and 1.6 steals per game. He shot 36.0% from three point territory and 46.3% from the field overall. He was an Honorable Mention All-American at Temple during his senior year (2008-09) and was named the Most Outstanding Player of the Atlantic 10 Tournament. Christmas played for the Celtics during their 2012 Summer League teams in Orlando and Las Vegas.

The Bulls officially signed Nate Robinson.

Last season with the Warriors, Robinson appeared in 51 games (nine starts) and averaged 11.2 ppg, 4.5 apg, 2.0 rpg, and 1.16 spg in 23.4 mpg. 

The Clippers have acquired Willie Green in a sign-and-trade agreement with the Hawks for Sofoklis Schortsanitis.

A nine-year NBA veteran, Green has averaged 9.1 points, 1.9 rebounds and 1.5 assists over his career. 

The Philadelphia 76ers have signed free agent Royal Ivey. 

Ivey (6-4, 215) was originally the 37th overall pick by Atlanta in the 2004 NBA Draft. In eight seasons, he has appeared in 437 games with 109 starts, averaging 3.4 points, 1.1 assists and 1.1 rebounds in 12.5 minutes per game.

The Sixers first signed Ivey as a free agent on July 28, 2008.

Ivey has spent the past two seasons with the Thunder.

The Wolves have officially signed Andrei Kirilenko.

Kirilenko played for CSKA in Russia during the 11-12 season.

Kirilenko will earn $20 millon over two seasons, according to Yahoo's Adrian Wojnarowski.

“We’re very pleased that Andrei has decided to resume his NBA career with the Wolves,” said general manager David Kahn.

The Brooklyn Nets have signed forward Tornike Shengelia.

“Toko had a very good summer league which led us to signing him for this season,” said Billy King.

Shengelia (6-10, 230), whose draft rights were acquired by Brooklyn from Philadelphia in exchange for cash considerations, was selected in the second round (54th overall) of the 2012 NBA Draft. Shengelia has been a member of the Republic of Georgia’s National Team since 2008. He played the 2011-12 season for Belgacom Spirou where he averaged 8.9 points, 5.2 rebounds and 1.1 steals in 18.4 minutes in 20 Belgium League games.

The Mavericks have signed first-round draft pick Jared Cunningham, according to an ESPN.com report.

Terms were not disclosed. 

Cunningham was the 24th overall selection in the NBA draft by the Cavaliers He was acquired by the Mavericks last month, along with the draft rights to Bernard James, the 33rd overall pick, and 34th overall pick Jae Crowder, in exchange for guard Kelenna Azubukie and the draft rights to the 17th overall pick in the draft, Tyler Zeller.

The Mavericks have signed Jae Crowder to a contract.

Crowder was the 34th overall pick in the 2012 NBA Draft after becoming the Big East player of the year.

The Nuggets have officially signed Anthony Randolph to a multiyear contract.

Randolph, 6-11, 225, averaged 7.4 points and 3.6 rebounds in 34 games (five starts) with the Timberwolves last season.