Bad luck for the 21-year-old who sustained an adductor injury on Monday.
Alex Collado will miss 2 months of action with an adductor injury, according to RAC1.
The promising attacker suffered a heavy blow in Monday's training session.
To make matters worse, the 21-year-old just resumed training after a serious metatarsal injury sustained in mid-July.
Collado was linked with a potential loan move this autumn but eventually decided to stay at Barca B and fight for his place in the first team.
Last term, the winger registered five goals and five assists in 24 matches for the B side.
Alex also made one appearance for the seniors, playing five minutes in the away La Liga match against Valencia.
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