It occurs to me that maybe Fran won't grab a Center from the portal out of his respect for Nunge. Jack has had a really tough year and if he is rehabbing hard with the idea of coming back to be the starting Center, maybe Fran doesn't want to put another roadblock in front of him and is content to just go with Josh O and Jack. Maybe feels he can get Big O ready to play 10 to 20 minutes per game. Also Iowa is in the ncaa tourney and maybe nothing happens until they are done playing.