Daniel Orton has returned to the roster of the Oklahoma City Thunder.

Orton was signed by the D-League's Tulsa 66ers Wednesday morning, and then called up and signed by the Thunder.

Orton spent his first two NBA seasons with the Magic.

The Boston Celtics have exercised the fourth-year option in the contract of Avery Bradley. This option covers the 2013-2014 NBA Season 

Bradley, a 6’2” guard, had a breakout season during the 2011-12 season recording career highs in virtually every statistical category. Bradley averaged 7.6 points, 1.8 rebounds and 1.4 assists in 21.4 minutes in 64 games last season. 

The Chicago Bulls have picked up the third-year option on the contract of Jimmy Butler.

Butler was the 30th overall pick in the 2011 NBA Draft.

The Oklahoma City Thunder exercised its third-year option on Reggie Jackson.

Jackson (6-3, 208), who was the 24th overall pick in the 2011 NBA draft, averaged 3.1 points, 1.6 assists, 1.2 rebounds and 11.1 minutes in 45 games during his rookie campaign.

The New Orleans Hornets have exercised their fourth-year option on Greivis Vasquez. 

Vasquez, a University of Maryland product, was acquired by the Hornets from the Memphis Grizzlies in exchange for Quincy Pondexter on December 24, 2011. Vasquez was originally selected by Memphis in the first round of the 2010 NBA Draft (28th overall). During the 2011-12 season, Vasquez tallied 8.9 ppg, 5.4 apg and 2.6 rpg while appearing in all 66 games. Vasquez led the Hornets in assists in seven of the eight games this preseason. He concluded the 2012 preseason averaging 7.4 assists per game, third best in the NBA behind only Chris Paul of the Los Angeles Clippers and Rajon Rondo of the Boston Celtics.

The Phoenix Suns have exercised the team’s 2013-14 option on the contract of forward Markieff Morris.

Originally the 13th overall pick (first round) of the 2011 NBA Draft by the Suns, last season Morris had the best statistical campaign by a Sun since Amar’e Stoudemire in 2002-03. The 6-10, 245-pound Morris became just the seventh Sun in franchise history selected to play in the Rising Stars Challenge at NBA All-Star Weekend. He averaged 7.4 points, 4.4 rebounds, 0.67 blocks and 0.65 steals in 19.5 minutes in 63 games (seven starts) last season, one of just six NBA rookies to average at least seven points and four boards a season ago.

The Philadelphia 76ers have exercised the fourth-year option on swingman Evan Turner.

Turner was originally the second overall pick by the 76ers in the 2010 NBA draft.

The Milwaukee Bucks have exercised the third-year contract option on Tobias Harris, and the fourth-year contract option on Larry Sanders and Ekpe Udoh.

Harris, 20, appeared in 42 games (nine starts) last year during his rookie season and averaged 5.0 points with 2.4 rebounds and 0.5 assists in 11.4 minutes per contest.

Sanders, 23, played in 52 games last season and led the team in blocks with 76 total (1.5 per game). He also averaged 3.6 points and 3.1 rebounds in 12.4 minutes per game. 

Udoh, 25, appeared in 61 games (11 starts) split between Golden State and Milwaukee last season, averaging 5.6 points, 4.2 rebounds and 1.67 blocks (11th in the NBA) in 21.2 minutes per contest. 

The Cleveland Cavaliers have exercised their team options on the third-year contracts of Kyrie Irving and Tristan Thompson for the 13-14 NBA season.

Irving and Thompson were lottery picks by the Cavaliers in the 2011 NBA Draft.