I'd assume it will be the games Sky get, I'm sure there is some sort of ruling with the CL and terrestrial like there is with the World Cup, Internationals and the FA Cup.
I enjoy watching the likes of Dortmund and Ajax in European competition and I couldn't care less about English teams, BT are really trying to throw their weight around though.
EDIT:
After reading up, it seems they've gone all out and bought ALL of the rights, so no more CL on Sky OR ITV.
Incredible!