Based on the wiki, two Cardinals currently have unresolved contract situations:
1. Jacoby Brissett (QB) — The biggest standoff. He's pushing for a contract extension worth $10M+ annually, but his current deal pays just $4.88M ($1.5M guaranteed). The two sides are "significantly far apart" as of early June, and Brissett held out from voluntary OTAs in protest. HC Mike LaFleur hasn't formally told him he's the starter, and the team is open to letting Carson Beck audition if this drags out (from the Jacoby Brissett page).
2. Michael Wilson (WR) — In a contract year (2026). Extension discussions are happening, but Wilson has publicly said the contract will "take care of itself" and stayed focused on offseason prep. He's coming off a 1,006-yard breakout, so he's betting on himself (from the Michael Wilson page).
Other Cardinals like Trey McBride and Marvin Harrison Jr. are still on their rookie deals with years remaining — no unresolved contract issues there.