Cristiano Ronaldo

Cristiano Ronaldo had an amazing 2013-2014 season at Real Madrid. Scoring a total of 31 goals in just 30 apperences in his league. He also holds the record for most goals scored in the UEFA Champions League with 17 goals in 11 apperences. Ronaldo is offten reguarded as the best player in the world taking Lionel Messi's spot.

Gareth Bale

Gareth Bale's first months at Real Madrid were tough. He suffered multiple injuries, but in the end I think he was worth the money.
He scored 15 goals in 27 league apperances, in the Champions League Bale scored 6 goals in 12 apperances.
Not only did he score 6 but he scored when they matter, like in the League's final against rivals Atletico Madrid, scoring a goal which put them ahead in extra time.

Arjen Robben

Arjen Robben, also known as "The Flying Dutchman" scored a total of 11 goals in 28 apperences for Bayern. Robben has played with some rather famous clubs such as Real Madrid and Chelsea. Robben transfered to Bayern at the start of the 2009-2010 season from Real Madrid.
He was among the players whose place in the first team became threatened because of the signings of Cristiano Ronaldo and Kaká. Real Madrid accepted a bid of around €25 million for Robben from Bayern Munich. Robben claimed he was "forced" to leave Real Madrid, saying that he "didn't want to go, but the club wanted to sell him".

Franck Ribery

Franck Ribery the French international scored 10 goals in 22 apperences in the Bundesliga. He is also set to miss the 2014 world cup due to a lower back injury.
Franck is a key role in France's international team, so his injury is devastating to the team Franck Ribery has been with Bayern sense the 2005-2006 season with a total of 179 apperences and 63 goals.