When Jerick McKinnon signed with the San Francisco 49ers in March 2018, he was expected to become a critical part of their offense.

But here we are, nearly two years later, and McKinnon has yet to even suit up.

Knee issues have prevented the running back from playing in a single game for the 49ers, as he tore his ACL just before the start of the 2018 campaign and underwent another surgery on his knee last summer.

The 27-year-old is slated to earn a base salary of $6.5 million in 2020, but he is willing to work with San Francisco in order to remain a part of the team:

“I’m willing to do whatever,” said McKinnon, according to Nick Wagoner of ESPN.com. “The organization knows I want to be a part of this team, so when that time comes there will be a talk between both parties.”

Even without McKinnon, the Niners had one of the NFL's deadliest rushing attacks this past season, as Tevin Coleman, Raheem Mostert and Matt Breida comprised a terrific trio.

Coleman and Mostert are both under contract for next season, but Breida is a restricted free agent, leaving the door open for McKinnon to become the 49ers' No. 3 back.

McKinnon spent the first four years of his NFL career with the Minnesota Vikings, displaying solid versatility in representing a fine receiving threat out of the backfield.

However, his efficiency left something to be desired, as he averaged just four yards per carry during his Vikings tenure.

San Francisco won 13 games and lost to the Kansas City Chiefs in the Super Bowl this year.