"It's a day to day, week to week thing," Mitchell said on SiriusXM NBA Radio of Garnett's bothersome right knee. "I'm not even going to promise that you're going to see him."
Garnett, who turns 40 in May, has played in 38 of Minnesota's 60 games this season. Mitchell had used him as a starter in all of those contests in order to bring some veteran balance to a very young lineup.
Should the 21-year veteran be finished for the season, it can be expected that talk will turn to Garnett's potential retirement. However, the Wolves signed him to a two-year deal last summer in the hopes that his leadership would be a key support factor in the franchise's youth movement.
Garnett is averaging 3.2 points and 3.9 rebounds in under 15 minutes a game this season, but his tutelage of players like Karl-Anthony Towns - born 12 days after Garnett made his NBA debut - is believed to be indispensable.