mate of mine got on the ladder with Spartak, club wouldnt refund his VISA but gave him the credit, now he is on 8 AWAY Champions League 2017-18 - Spartak + Porto + Roma + 2018-19 - Napoli + Bayern + Porto + Barca + 2019-20 - Napoli. Didnt qualify for Maribor or Kiev but went anyway and he recons he qualified for Man City but was on holiday so missed the sale.
Someone with Spartak could potentially have 11 maybe !
here are some numbers if they go back as far as Augsburg or even Sion : Sion 564 - Maribor 842 - Augsburg 1158 - PSG & Red Star 2000 (remember club bought a couple of hundred for security reasons in Belgrade so wont be 2000 with a Red Star credit).
Hope this helps - YNWA
He would not have qualified for City anyway. It was 4 credits guaranteed from the below. There was then a very very limited sale for 3 credits, loads missed out.
You mate would have only had 2 at this point.
FC Porto (14/02/18), Sevilla (21/11.17), Maribor (17/10/17), Spartak Moscow (26/09/17), Villarreal (28/04/16), Borussia Dortmund (07/04/16), Manchester United (17/03/16), FC Augsburg (18/02/16), FC Sion (10/12/15), Rubin Kazan (05/11/15), Bordeaux (17/09/15).