It seems you didn't really understand how big difference is between mentioned team and his league level (5) or you're possibly trolling which I doubt, but still;
It is not only about quallity of his players. On level 5 which he will finish this season financial rewards are:
(credits: http://forum.topeleven.com/top-eleve...html#post16597)
League
1st - 8.25M
2nd - 7.88M
3rd - 7.5M
4th - 7.13M
5th - 6.75M
6th - 6.38M
7th - 6M
Prize/match = 144K
Champions League
Win - 2.23M
Final - 1.71M
Semi - 1.32M
1/4 - 1.01M
1/8 - 780K
Group - 600K
Cup
Win - 2.64M
Final - 2.03M
Semi - 1.56M
1/4 - 1.2M
1/8 - 923K
Ploff - 710K
Qual - 533K
Prel - 355K
So maths looks like this:
League max. earning for level 5 is 12M
CL max. earning is 10.3M and Cup 14,9M, total sum is 37,2M
Don't forget that bonuses on previous levels are lower than from 5th, and if we would count them, he couln't earn not even 10% of his budget + value of his players + value of stadium investments + tokens spent to speed up stadium construction...
So tell me then how it is possible to EARN 1,59B+ on levels 1-4?
Even if we count only earnings of previous levels, without any spent money (on stadium upgrades of 180K seat stadium, wages, win bonuses), we can't get anywhere near that number.