Journalist notices Petr Cech's actions at half-time after Leno conceded penalty v Palace

Bernd Leno replaces an injured Petr Cech during Arsenal v Watford

Unai Emery had a selection headache going into their game against Crystal Palace on Sunday afternoon.

Petr Cech's return to fitness meant that Emery had to choose whether to reinstall him to the starting line-up or continue with Bernd Leno in goal.

And Emery acknowledged before the match that it was a 'big decision'.

"For Sunday Petr Cech is okay and we must decide whether to play him in the first XI or not," Emery said, per Sky Sports.

"We have very big confidence in all the goalkeepers and I am happy with the way they work with the coaches.

"It's a big decision but it's also a positive one because they are both (capable of) a good performance.

"Now we are very happy with Leno and before Petr Cech had the injury he was also giving very good performances."

Emery eventually went with Leno and it was his poor punch that led to Shkodran Mustafi giving away a penalty in the first half.

Bernd Leno retained his place over Petr Cech for Crystal Palace v Arsenal

Leno would go on to dive the wrong way as Luka Milivojević gave his side the lead.

The 26-year-old would have been disappointed with his role in Palace's opener but fortunately he had the support of Cech.

According to Goal's Arsenal correspondent Chris Wheatley, Cech, who would have undoubtedly been disappointed to have been on the bench, was the first player to console Leno at half-time.

Wheatley embedded a video along with his tweet but he did not actually capture Cech's actions.

Nevertheless, that's still pure class from Cech. This just proves what a top professional he is.

Unfortunately for Leno, his mistake ended up proving costly for Arsenal.

Emery's side took the lead in the second half after goals from Granit Xhaka and Pierre-Emerick Aubameyang, only for Milivojević to convert a second penalty in the 83rd minute to ensure the game ended in a 2-2 draw.

The Gunners retain their 12 game unbeaten streak and remain in fourth place in the Premier League table.

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