Messi during this Sunday's training session / PHOTO: MIGUEL RUIZ-FCB

Starting this Monday, FC Barcelona will face one of the most important weeks of the season. On Tuesday the Blaugrana will face off against AC Milan in the group stage of the Champions League, and on Saturday they will host Real Madrid at the Camp Nou for the first Clásico of the 2013/14 season. Only three points separate the Barça from Madrid.

Here’s an overview of the Barça’s upcoming week:

MONDAY 21

19.00 - Training session at the San Siro.

TUESDAY 22

20.45 - Champions League match: AC Milan - FC Barcelona

WEDNESDAY 23

11.00 - Training session at the Ciutat Esportiva

THURSDAY 24

18.00 - Training session at the Ciutat Esportiva

FRIDAY 25

19.00 - Training session at the Camp Nou

SATURDAY 26

18.00 - La Liga match: FC Barcelona - Real Madrid

SUNDAY 27

11.00 - Training session at the Ciutat Esportiva