New York cleared three roster spots after Wednesday's 1-0 loss at Seattle, optioning infielder-outfielders Oswaldo Cabrera and Franchy Cordero along with left-hander Matt Krook to Triple-A Scranton/Wilkes-Barre.
Stanton, Donaldson and Kahnle played in a rehab game for Double-A Somerset on Tuesday. Stanton was hitless in three at-bats in his first appearance since injuring his left hamstring April 15.
Donaldson went 1-for-4 in his fourth rehab game as he comes back from a strained right hamstring sustained April 5.
Kahnle pitched one inning, giving up one run and one hit and walking two. He has been out since spring training with right biceps tendinitis.
Boone said he wasn't concerned about Stanton returning after playing in just one rehab game. He said Stanton probably will be a designated hitter for a couple of weeks after rejoining the Yankees.
New York is missing centerfielder Harrison Bader, who strained his right hamstring Monday against the Mariners and went on the injured list the next day.
Left-hander Carlos Rodon, sidelined since spring training by a sore left forearm and an ailing back, was transferred to the 60-day injured list.