Last Thursday night, Bennie Fowler went over to Sterling Shepard’s house to watch the Giants-Patriots game. Saquon Barkley and Evan Engram were there, as well. All four of the players would rather have been together at Gillette Stadium helping rookie quarterback Daniel Jones get the offense in gear.

Shepard, Barkley and Engram were all out with injuries. Fowler was perfectly healthy and there was a perfectly good reason why he was not with the Giants in Foxborough, Mass: He was no longer on the team.

Fowler was released on Oct. 1, but that did not preclude him from watching the game with what at the time were his former teammates.

“I was with the guys anyway watching even though I wasn’t on the team,’’ Fowler said Monday. “I went to dinner with all the guys as if I was still on the team last week. Not much has really changed, I’m back in the building, back playing.’’

Fowler is indeed back in the building. He was re-signed on Monday, as the Giants added a roster spot by terminating the contract of linebacker Nate Stupar. It was Stupar who was overpowered at the line of scrimmage by a running back, Brandon Bolden, on what became a blocked punt for the Patriots that was returned for a touchdown in the first quarter.

In the same game, undrafted rookie Jon Hilliman lost the ball on a fumble that the Patriots returned for a touchdown, and a day later, Hilliman was waived. So, costly mistakes have consequences.

Hilliman cleared waivers and was re-signed to the practice squad.

Fowler played in the first four games, with two starts — Golden Tate was sitting out a suspension the first four games — and had 12 receptions for 99 yards. While he was unemployed, Fowler said he had workouts with the Vikings and Lions.

“They said it was a possibility I could be back, could be a week, could be a month,’’ Fowler said. “I know I can play in this league and I’m glad I’m back here.’’

Buck Allen said he thought it was “crazy, man’’ when he was told the ages of the running backs in the room. Allen, 28, was signed Friday, replacing Hilliman on the roster. Allen joins a position group with Barkley, 22, Wayne Gallman, 25 and Eli Penny, 26.

“I’m like ‘Whoa,’ ’’ Allen said. “Make me feel old. Seems like yesterday I was a rookie with Justin Forsett. It’s a blessing.’’

Allen spent his first four NFL seasons with the Ravens and has 340 rushing attempts and 129 receptions in his career.

“Knowledge, wisdom, patience, trust in yourself,’’ Allen said, when asked what he can bring to the Giants. “And whatever the coaches need me to bring. That’s running outside, inside, catch, hitting, whatever they need me to do.’’

CB Sam Beal, on injured reserve with a strained hamstring, is eligible to start practicing, as it is six weeks into the season. He can play as early as Week 9. Beal did not work Monday, but coach Pat Shurmur said, “You can expect to see him on Wednesday.’’