 Musi waFebruary 22, 2017, McCullough akatengeswa, pamwe naBojan Bogdanović, kuWashington Wizards mukutsinhana naAndrew Nicholson, Marcus Thornton uye 2017chisarudzo chokutanga chakadzivirirwa. Musi waKurume 1, 2017, akaita kutanga kwake kweWizards, achigadzira imwe chete yemahara kukanda mu1:39 yekuita panguva yekukunda pamusoro peToronto Raptors. Mazuva maviri gare gare, akaendeswa kuNorthern Arizona Suns yeNBA Development League, zvichienderana nemutemo wekuchinjika. Akagara neNorthern Arizona kusvika pakupera kwegore ra2016 17 D-League mwaka. 