• Arsenal and Chile attacker Alexis Sanchez (AAP)
Alexis Sanchez insists he is feeling 'much better' despite posting a gruesome update on the ankle injury he suffered in Chile's Copa America Centenario triumph.
1 Jul 2016 - 1:51 PM  UPDATED 1 Jul 2016 - 1:51 PM

Chile secured back-to-back Copa titles after a second consecutive penalty shootout win over Argentina in the decider.

However, Sanchez went off in the first half of extra-time after failing to shrug off an injury suffered in the opening minutes, courtesy of a crunching Gabriel Mercado challenge.

The Arsenal attacker posted an update of his swollen ankle, which features some heavy bruising, via his official Twitter account on Thursday.

Sanchez wrote: "Fourth day of my holidays, stuck in a hotel bored... but I am much better."

He then added: "Your body can withstand almost anything.. it's your mind that you have to convince."

Once recovered, Sanchez will link up with his Arsenal team-mates for pre-season.

It is unsure whether he will be fit for their first game against an MLS All Star team on 28 July.

Arsenal's opening Premier League fixture is against Liverpool on 14 August.