He has to be very very careful with any income he gets because of the luxury box tickets. If friends or family pay him for the seats the IRS will go after that as well. It's no fun but it's the law.
Lol! All that matters is what the IRS says it's basis is at the time of transfer. IIRC, they'll use an $8 basis. It makes sense because if (and I know it will never happen) Jeter sells it for $1,000,000, he'll owe capital gains taxes on $999,992.
Recipients of gifts do not have to pay taxes on the gift - - they only have to pay tax on any income the gift generates or capital gains tax if the gift is sold. Gifts are not income and the gift tax only applies to the donor.