This is hard to answer without knowing how he might use the cards, but the Sapphire Reserve has a $550 annual fee, which includes an annual $300 travel credit. Again, without a ton of information, I might suggest closing this card due to the high annual fee and the unliklihood that someone not "in the game" would use this card to it's potential to offset this fee. Before canceling the card, try to use any available benefits:
1. If there is a travel benefit ($300) available, try to use that before canceling. I think you can look in the rewards section and see how much of the travel benefit is available.
2. If there are any other benefits, like Global Entry/TSA precheck, etc, that haven't been used, you can use them prior to canceling.
3. Make sure to transfer any UR points from the card being canceled to another UR card. This is really important- we don't want him to lose his points.
4. He has at least 30 days from the AF posting to have it fully refunded. Someone else might chime in and correct this- it could be even longer- 30 days from statement closing. I just don't want to give out the wrong info, so I'll say 30 days from posting, just to be safe.
The Sapphire Preferred has a $95 annual fee and can always be product changed to a CSR if he would like the benefits of the CSR down the line.