The Lions signed Alexander (ankle) to a reserve/future contract Monday, Tim Twentyman of the team's official site reports.
Alexander moved back and forth between Detroit's active roster and practice squad over the first half of the season. The 25-year-old then picked up an ankle injury while making his third and final appearance of the season against Miami in Week 8. Alexander thus finished the 2022 campaign with one reception for seven yards over four appearances, and he'll now look to carve out a permanent spot on the active roster heading into the 2023 campaign.