Philip Rivers retired after the 2020 NFL season, but the Indianapolis Colts are reportedly considering bringing him for a workout amid their quarterback crisis.Starter Daniel Jones is done for the year with a torn Achilles, and backup Riley Leonard is also injured, leaving Indianapolis scrambling for options. The potential move to revisit Rivers, now 44, has surprise NFL observers.ESPN broke the story on Monday Night Countdown ahead of the Los Angeles Chargers vs. Philadelphia Eagles game, and the reaction was immediate. Analyst Troy Aikman praised Rivers’ incredible career but added that a comeback at his age would be a major challenge.“I mean, I love Philip Rivers as much as anybody, but I can’t imagine being out of the game for five years and coming back at 44 years old," Aikman said. "I can’t imagine that happening.”The 12-year Cowboys quarterback couldn’t resist a laugh, joking that he might have to suit up for the Colts too after hearing the news."I mean, I’ve only been out of the game for 25 years. I mean, come on. I don’t take a pay cut. I’ll sign up for a full salary and I’ll give them a couple of downs," the Hall of Famer joked.The oldest quarterback in the NFL right now is Aaron Rodgers (42) of the Pittsburgh Steelers, and he’s likely to retire after 2025. Philip Rivers, who recently became a grandfather, is older by three years. At 44, he hasn’t taken an NFL snap in five years, leaving fans to wonder if he’s still in game shape. The Colts are set to see for themselves during his Tuesday workout.Why are the Indianapolis Colts bringing Philip Rivers back?The Colts’ move to call on Philip Rivers highlights just how bad things are at quarterback for them.Daniel Jones looked set to have his best season in pro football, but a fibula issue saw him slow down a bit in recent games. The final blow came on Sunday when he suffered a non-contact tear of his right Achilles against the Jacksonville Jaguars, ending his season prematurely.After finishing Week 14 following Jones’ injury, Riley Leonard was set to take over as the Colts’ starting quarterback for the remainder of the season. Unfortunately, he reportedly hurt his knee on Monday night and his status is now week-to-week. To make matters worse, Anthony Richardson Sr. remains on injured reserve due to an eye injury.Desperate for a solution at quarterback, Colts GM Chris Ballard has decided to call on Rivers as an emergency option. Rivers knows the Colts’ system from his final NFL season and has a working relationship with coach Shane Steichen from the Chargers.Rivers threw for 63,440 yards and 421 touchdowns over his 17-year NFL career.