Okafor played just two games for the Sixers this season.
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The Nets have now acquired two of the top-3 picks of the 2015 draft in Okafor and D'Angelo Russell.
Philadelphia has excised Okafor from its rotation after declining their team option on him for next season, and Okafor's representatives have asked for a trade or a buyout.
The Nets, 9-14 on the season, are now in Mexico City for a couple of games which includes a matchup with the Oklahoma City Thunder tonight and a game against the Miami Heat on Saturday. While he averaged 14.6 points for the Sixers, and shot 51 percent from the field, he was marginalized by Embiid's rise to stardom. He will be a free agent following the 2017-18 season. He averaged 17.5 points, 7.0 rebounds and 1.2 blocks per game as a rookie, and the rebuilding Nets are clearly ready to take a risk on the 6-11 center.