Table:
text: 2008–09 Celtic F.C. season
Top scorers
Top scorers
P Player Position_ SPL League_Cup Scottish_Cup UEFA_Champions_League Total
1 Scott McDonald Forward 16 1 1 1 19
2 Georgios Samaras Forward 15 2 0 0 17
3 Shunsuke Nakamura Midfielder 8 1 0 0 9
4 Scott Brown Midfielder 5 1 1 0 7
4 Aiden McGeady Midfielder 3 2 1 1 7
5 Jan Vennegoor of Hesselink Forward 6 0 0 0 6
6 Shaun Maloney Midfielder 4 0 0 1 5
7 Cillian Sheridan Forward 4 0 0 0 4
7 Stephen McManus Defender 4 0 0 0 4
7 Glenn Loovens Defender 3 1 0 0 4

text: 2008–09 Celtic F.C. season
Top scorers
Top scorers
P Player Position_ SPL League_Cup Scottish_Cup UEFA_Champions_League Total
8 Paul Hartley Midfielder 3 0 0 0 3
8 Gary Caldwell Defender 2 0 1 0 3
9 Barry Robson Midfielder 1 0 0 1 2
9 Darren O`Dea Defender 1 1 0 0 2
10 Koki Mizuno Defender 1 0 0 0 1
10 Marc Crosas Defender 1 0 0 0 1

Question: What is Celtic FC's highest number of UEFA Champions Leagues for the 2008/09 season?