Celtics emerging as 'stealth suitor' for free agent guard Kemba Walker

By Ty Anderson, 985TheSportsHub.com Perhaps the reports of the Celtics' return to an asset-accumulating middler were premature. With both Kyrie Irving and Al Horford expected to officially leave when free agency next Sunday night, and with the Celtics feverishly clearing cap room at last week's 2019 NBA Draft in Brooklyn, Danny Ainge and the Celtics…