Yeah credits are just for European aways. 1 credit for each application and 2 credits for each attendance.
You need to have purchased all home cup games to be eligible and then it goes down to:
1. Credits with 1 attendance or more - all guaranteed a ticket
2. Credits for applications.
Your chances are very slim mate going off the below list:
38 supporters have 26 credits
3 supporters have 25 credits
56 supporters have 24 credits
8 supporters have 23 credits
75 supporters have 22 credits
19 supporters have 21 credits
98 supporters have 20 credits
47 supporters have 19 credits
122 supporters have 18 credits
55 supporters have 17 credits
150 supporters have 16 credits
75 supporters have 15 credits
124 supporters have 14 credits
91 supporters have 13 credits
126 supporters have 12 credits
136 supporters have 11 credits
220 supporters have 10 credits
249 supporters have 9 credits
330 supporters have 8 credits
446 supporters have 7 credits
623 supporters have 6 credits
756 supporters have 5 credits
1,194 supporters have 4 credits
1,646 supporters have 3 credits
2,544 supporters have 2 credits
7,917 supporters have 1 credit
215,250 supporters have 0 credits
Source:
http://www.manutd.com/en/Tickets-An...UEFA_Europa_League_Away_Game_Information.aspx
That list does include members who aren't eligible and ST/execs that did not purchase all home cup games.
My reckoning is that people with 3 credits and above should be safe and people with 2 credits will have a chance. All dependant on how many tickets United keep in-house and the actual final allocation from UEFA.