Brief presentation of the teams:
Valencia: Financialy troubled club, recently bought by business man Peter Lim, has a good transfer budget, but in the first season they don't play in Europe. Star players of the team are goalkeeper Diego Alves, Midfielder Sofiane Feghouli and striker Jonas. They have some interesting young players as: Bernat, Fede and Alcacer.
The challenge is to win the title over Real and Barcelona.
Marseille: Former french and European giant, no European football this year, but a balanced squad and some good players as well: Nkoulou, Imbula, Valbuena, Thauvin and new striker Batshuay.
The challenge is to win back the Ligue 1 title and beat the powerhouse club, PSG.
http://icons.iconarchive.com/icons/giannis-zographos/german-football-club/256/Schalke-04-icon.png
Schalke 04 The most stable club in terms of finances,they don't have a very large transfer budget in the fisrt season, but have a very balances squad with experienced and young players. Star players of the team are: Howedes, Draxler and Huntelaar. But they have a lot of young player such as: Matip, Goteska, Draxler and Meyer.
The challenge for them is to win the Bundesliga, they last won it over 50 years ago and beat probably the best team in Europe at the moment, Bayern Munchen.
Personaly i'd go for the german team.
Sorry for my bad english.