LIMITATIONS: While former Heat prospects James Ennis and Jarnell Stokes have been set free from their most recent teams, it's not as if the Heat can inject them back into their pipeline. At least not yet. Under NBA rules, teams are not allowed to reacquire, through trades or free agency, a dealt player for a calendar year from the date of being traded. With Ennis, that means no possible Heat return until Nov. 10 (the one-year anniversary of his trade to the Memphis Grizzlies). With Stokes, it means no return until Feb. 19, 2017 (one year from when he was traded to the New Orleans Pelicans). The irony is Stokes has agreed to return to the Heat's NBA Development League affiliate, the Sioux Falls Skyforce, now eligible to be signed by another NBA team, but not the Heat. Because summer-league contracts are not formal NBA contracts, one or both would be eligible to play with the Heat's summer-league team in July. According to the "Ridiculous Upside" NBDL blog, Stokes is positioned to set the D-League record for the league's all-time best win-share rating and player-efficiency ratings.