UPDATE: I suggested him not to go to the NO program and instead go to the Ukrainian Catholic parish. The priest is Ukrainian and was ordained in his country. He's under a bishop whose lineage seems to be 100% Ukrainian Catholic.
In the past, M. (the possible convert) expressed some desire to convert to Orthodoxy, so he may feel inclined to go there. I gave him some opportune warnings about converting to Orthodoxy.
I haven't explained him why avoid the Novus Ordo. He has my personal phone number and email address in case he wants to know more. I also suggested that he read some good catechism and learn how to pray the Rosary. He's a little bit erratic sometimes. Prayers for him are greatly appreciated.
Thank you all for your input. Our Lady keep you under her mantle.