Luis Severino played catch from 60 feet on Monday to begin his throwing program and although Aaron Boone said it went “well,” it’s clear the right-hander isn’t in the Yankees’ plans anytime soon. 

Out with a strained lat, Severino was transferred to the 60-day injured list prior to Monday’s game against the Mariners at the Stadium, meaning he won’t be eligible to return to the roster until mid-September. 

Asked if he expected Severino to rejoin the rotation upon his return, Boone said, “We’ll see. It’s early in the process, but I hope so.” 

The Yankees were already monitoring Severino’s workload, since he’s spent much of the previous three seasons on the IL. He’ll now end up missing most of the second half, as the Yankees made the move on the same day they traded for right-hander Frankie Montas from the A’s. 

Despite the fact Severino wouldn’t have realistically been able to pitch in the majors until September, the move was still somewhat of a surprise. 

Severino left his most recent start with the lat injury on July 13 and could be built back up as a starter in the minors before rejoining the Yankees for a postseason run. 

But he also showed an ability to pitch well out of the bullpen last October after returning from Tommy John surgery, a return that was delayed by shoulder tightness. 

Domingo German isn’t sure what his role will be with Frankie Montas arriving to join the rotation, but he pitched five strong innings in Monday’s 7-2 win over Seattle. 

“I’m just focused on doing my job,’’ the right-hander said. 

German still has options left, so he could be optioned to Triple-A Scranton/Wilkes-Barre, as could Ron Marinaccio, who tossed a scoreless inning Monday. 

Clay Holmes was bound for what Boone called “a bump in the road,” but following Sunday’s blown save, the right-hander has given up multiple runs in two of his last seven appearances and his command has been off. 

Holmes has issued walks in seven of his last eight appearances after walking just five in his first 37 outings. 

Still, Boone believes Holmes is a “tweak here or there mechanics-wise” away from righting himself. 

The manager added, “mentally, he’s equipped to handle all that.” 

Aaron Judge was named AL Player of the Week for the second week in a row on Monday after hitting five more home runs last week. He also went 8-for-23 with 10 RBIs and six walks, as his gamble on himself continues to pay off for the outfielder. 

He then hit another — his 43rd — on Monday. 

“Even for a guy in the middle of an MVP season, it makes you say, ‘Wow,’’’ Boone said of the consecutive awards. “The season he’s building and putting together, he’s continued to raise that level of awe.” 

Joey Gallo’s ill-fated tenure in The Bronx is expected to end by Tuesday’s 6 p.m. deadline, as the Yankees determine what they can get for the left-handed bat they acquired from the Rangers at last year’s deadline. 

“I know it’s been talked about over and over, it’s been heavy,’’ Boone said of Gallo’s struggles as a Yankee. “You can definitely sense that he’s had some really tough moments. He’s been accountable and hasn’t run from anything. … It’s been a tough calendar year for him.” 

He was held out of the lineup again on Monday. In 140 games with the Yankees, Gallo hit .159 with 25 homers in 501 plate appearances, with an OPS of .660. 

Prior to Monday’s game, the Yankees held a moment of silence for basketball Hall of Famer Bill Russell, who died Sunday at 88 and called the former Celtics great “the greatest champion in all of sports.”