Wong is a very solid all around player. Unfortunately, he plays 2B and the Cards have a cheaper and adequate replacement. Unless he’d take a back loaded deal, signing him means one of Yadi or Waino is likely not coming back.
If the Cardinals remaining shopping list is Yadi, Waino, and a bat then Wong may be the bat. He goes back to 2B, Edman to 3B, and Carp to DH. I would be fine with that because I love defense. They should offer Wong a 2 yr/15M deal. $5M in 2021 and $10M in 2022.