Clint Capela is to join the Atlanta Hawks as part of an elaborate four-team trade deal involving 12 players, according to widespread reports.

The Houston Rockets will allow center Capela, 25, to move to the Hawks, with the Minnesota Timberwolves and the Denver Nuggets also involved in a complex series of swaps ahead of the trade deadline.

Robert Covington is another big name involved as he moves from the Timberwolves to the Rockets along with Jordan Bell as part of the NBA's most expansive trade for two decades, per ESPN.

The young Hawks side led by All-Star Trae Young is boosted by the additions of Capela and another center, the veteran Nene, who also moves from the Rockets.

Capela signed a five-year, $90million deal with the Rockets after the 2017-18 season, but the team have been eager to move his contract and appear keen to surround James Harden and Russell Westbrook with three-point threats as part of smaller line-ups.

That seems to be the motivation behind landing Covington, with experienced forward PJ Tucker now set to be the regular at center as Bell, formerly of the Golden State Warriors, provides some backup.

Malik Beasley has joined the Timberwolves along with Jarred Vanderbilt, Evan Turner and Juan Hernangomez, with the team also collecting the Brooklyn Nets' 2020 first-round draft pick via Atlanta.

The Nuggets, meanwhile, end up with Houston's 2020 first-round draft pick along with quartet Gerald Green, Noah Vonleh, Keita Bates-Diop and Shabazz Napier.

Capela is averaging 13.9 points and 13.8 rebounds in 39 matches this season, while Covington is shooting at 43.5 per cent from the field, a career-high, as he averages 12.8 points from 29.4 minutes per game.

Further moves are expected before the trade deadline, which is on Thursday at 3pm ET.