The Yankees will evaluate LHP J.A. Happ on Monday to determine if he will be able to return from hand, foot and mouth disease on Thursday, manager Aaron Boone said on Sunday, according to ESPN's Coley Harvey.
Happ, who was sent home Tuesday with a "very mild case" of hand, foot and mouth disease and placed on the 10-day disabled list, has played catch and worked out over the past couple of days, however the team will decide if he can return Thursday against the Texas Rangers.
New York promoted RHP Chance Adams to take Happ's spot in the rotation for Saturday's game against the Boston Red Sox.
Happ, whom the Yankees acquired before the trade deadline, won his only start since joining the team, throwing six innings of one-run ball on July 29.
Including his time with the Toronto Blue Jays, the 35-year-old Happ is 11-6 with a 4.05 ERA this season.