247Sports' Travis Banham was the first to report the news of Koch's portal entry. Koch now represents the sixth Hawkeye to enter the transfer portal following the season's end and firing of head coach Fran McCaffery, joining forwards Owen Freeman, Pryce Sandfort and Riley Mulvey and guards Brock Harding and Josh Dix.

The Iowa Hawkeyes' roster is being absolutely decimated in the wake of Fran McCaffery's firing, as yet another one of their key players is departing. Josh Dix i

Iowa freshman forward Cooper Koch entered the NCAA transfer portal Wednesday, bringing the number of 2024-25 Hawkeye men’s players in the portal to six. Plagued by health issues, the 6-foot-8 Koch was a rotation player before shutting it down for the season. He played in just 10 games, averaging 4.6 points. He made 9 of 21 three-pointers.