When Gary Sanchez went on the disabled list with a strained right groin in late July, general manager Brian Cashman said a return in the final week of August or the first seven days of September was a reasonable timetable.

Monday, when Sanchez was at Yankee Stadium, Aaron Boone said that time frame was still in play for the catcher to come off the DL.

“I think that is very fair. Now that we are getting into baseball activities with some urgency, we will start to get a better feel for that,’’ Boone said before the Yankees hosted the Mets. “That’s a fair timeline and it looks very much like he is on that trajectory.’’

According to Boone, Sanchez ran on the field Sunday in Tampa and participated in catching drills and hit in the indoor batting cage at the Stadium on Monday.

“He said he is feeling really well and looking forward to getting ramped up,’’ Boone said. “Hopefully as we get drier weather, he can get on the field and really ramp this process up.’’

It has been a miserable year for Sanchez, who coming out of spring training was considered the Yankees’ best all-around hitter. However, he has been on the DL twice for the same injury, is batting .188 with 14 homers, 42 RBIs and a .699 OPS. He has been behind the plate for 35 wild pitches (fifth among MLB catchers) and has been charged with 10 passed balls (third).

When last seen in a Yankees uniform on July 23, Sanchez loafed after a passed ball that allowed a Rays runner to score from second base in the first inning. In the ninth he didn’t run hard to first and cost the Yankees a chance to tie the score and instead became the final out at first. The next day he went on the DL.

After swinging under water Sunday, Boone believes Aaron Judge is getting close to getting a bat in his hands.

“I feel like we are any day from getting a bat,’’ Boone said. “I know he was getting some tests results [Monday] to continue to check on how it’s healing.’’

Judge has been on the DL since July 27 with a fractured right wrist.

Aroldis Chapman’s past three outings haven’t been vintage Chapman, but Boone doesn’t believe his closer is being bothered by a left knee that has been an issue since May.

“I feel like from a knee standpoint he is probably as good as he has been all season long,’’ Boone said of his closer, who has 30 saves in 32 chances.

However, in Chapman’s past three outings, he had given up two earned runs in three innings, walked six and fanned seven.