Aaron Boone's comments suggest Dellin Betances won't be returning to Yankees in 2020Boone is content with the bullpen he has at the moment12/11/2019, 10:25 PMJun 24, 2019; Bronx, NY, USA; New York Yasnkees pitcher Dellin Betances (68) looks on against the Toronto Blue Jays during the ninth inning at Yankee Stadium. Mandatory Credit: Andy Marlin-USA TODAY Sports / Andy Marlin