Detroit Lions star running back Jahmyr Gibbs might be in the midst of a hold-in as he seeks a new contract.According to ESPNs Eric Woodyard, Gibbs, who did report to training camp, did not take part in the teams first practice on Wednesday.Gibbs absence, which is not believed to be injury-related, according to Jeremy Reisman of Pride of Detroit, comes amid he and the Lions trying to hammer out a contract extension.(Gibbs) was not listed on the teams Physically Unable to Perform or Non-Football-Injury list to start camp, suggesting his absence is not injury related, Reisman wrote.MORE: Dan Campbell just sent Jahmyr Gibbs fantasy football value soaringWhile Gibbs looks to be holding in, it may not last long. ESPNs Adam Schefter reported this week that the two sides are close to getting something done.I think the Gibbs thing could be relatively quick, whatever that is, Schefter said on the Brad Galli Show.Jahmyr Gibbs should reset the marketDetroit Lions running back Jahmyr Gibbs (0), Detroit Lions wide receiver Amon-Ra St. Brown (14) and Detroit Lions wide receiver Jameson Williams (1) celebrate after a touchdown during the second quarter against the Los Angeles Rams at SoFi Stadium. Credit: Kirby Lee-Imagn ImagesA former first-round pick of the Lions in 2023, Gibbs has become a star over his first three years in the NFL and there is no doubt he is one of the very best players at his position.Gibbs, who is still just 24 years old, is coming off a season in which he notched his third consecutive Pro Bowl nod with 1,223 rushing yards, 616 receiving yards and 18 total touchdowns.In the year prior, Gibbs posted a career-best 1,412 rushing yards and fell just shy of 2,000 yards from scrimmage with 517 receiving yards. His 16 rushing touchdowns led the NFL.MORE: Ryan Clark-ESPN lawsuit brewing? Sports media analyst chimes inWhen its all said and done, Gibbs should reset the market at running back, at least when it comes to total value and annual average.Miami Dolphins rusher DeVon Achane holds the high-water mark for total value ($64 million), and Philadelphia Eagles running back Saquon Barkley is tops in annual average ($20.6 million), according to Over The Cap.The record for guaranteed money belongs to Arizona Cardinals running back Jeremiyah Love at $53 million, although that is a result of how rookie contracts work.Barkley is next in guaranteed money at $36 million and chances are Gibbs will be closer to that mark, although we would not rule out him at least approaching Loves total.MORE: Jonathan Greenard starts Eagles training camp on PUP listWe could very well see Gibbs get a four-year deal that exceeds $83 million in total value. That would put him atop the list of running backs when it comes to annual average and total value, and theres enough room for him to surpass Loves guaranteed money mark, also.