Hector Bellerin
Hector Bellerin will miss the Spanish under-21 double tie with Austria Getty

Arsenal star Hector Bellerin has officially pulled out from the Spain under-21 squad due to an injury. The national team have failed to set a timeframe for the recovery but the news are another big concern for Arsene Wenger ahead of the Gunners crucial trip to Manchester United on 19 November.

Bellerin's withdrawn from his national team comes only a day after the Chile football federation revealed that Alexis Sanchez has suffered a low-grade muscular injury during a training session, ruling the Arsenal forward for the World Cup qualifier against Colombia on Thursday night (10 November).

Wenger will be sweating over the availability of the two key Arsenal star as the Gunners face a crucial week only after the international break. Yet, just four days after their visit to Manchester United, they will face Paris Saint Germain at home in a decisive game for the Gunners to go through the Champions League last 16 at top of their group.

Spain already announced on Tuesday that Bellerin had been unable to train with his national teammates "as a precaution."

The right-back played the full 90 minutes during the weekend draw with Tottenham but reports in Spain added that the Arsenal right-back had arrived to the Spanish under-21 camp with some unspecified niggles, being labelled as a "doubt" for the Friday's 2017 Euro qualifier against Austria.

On Wednesday morning Spain confirmed the Arsenal star had once again been unable to train with the rest of his teammates, but adding that he was still expected to travel to Austria anyway ahead of their crucial game with the Austrians.

However, only hours later the national team have announced that Bellerin has been finally forced to leave the Spanish camp, only 10 days before Arsenal trip to Manchester United.

Spanish under-21 manager Albert Celades has consequently named Sunderland loanee Javier Manquillo to fill his gap ahead of the double crucial tie with Austria, with a second left of the playoff to be played in Spain on 15 November.