The agreement Eichel's handlers have with Leaf is a "Multi-year" agreement, and they're not saying how many years it is. My opinion is this is done purposely to prevent what Upper Deck did in 2012 with Andrew Luck after Panini signed him to an exclusive for one year.(inserting a TRADE UPPER DECK redemption that wasn't able to be redeemed until 1 year after the Panini agreement was signed).
The Eichel RPA should be /99.
My favorite dirty idea would be for Upper Deck to buy Eichel autos off the secondary market, and use them as cut autos on cards.
TriStar did it several years ago, getting around an exclusive autograph agreement that Adrian Peterson had signed with Dave & Adams by simply buying 8x10 autographed photos from D&A website, then proceeded to cut the autos off and inserting them as trapped and slabbed autos. Other companies like Historic Autographs and yes, even Leaf have been doing something similar for years in both baseball and entertainment products.
In the end, what will likely happen is no autos for Eichel in 15-16 CUP, but when the Leaf contract does finally expire, Upper Deck will be putting Eichel "THROWBACK" autos in the new products, making "EICHEL TRIBUTES" Cup cards or something like that.