The Chilean international forward has become the subject of huge approval in recent weeks as a number of high-profile figures have been left stunned by his performances this season.
Sanchez arrived at the Gunners in the summer as a wonderful talent, but during his time at the Nou Camp he was prone to inconsistency as he often played second fiddle to Lionel Messi.
Stepping out of the Argentine superstar’s shadow this season, however, has brought out a new streak in Sanchez – one which has undoubtedly taken many by surprise.
The former Udinese man has scored 12 goals and provided seven assists in 19 Premier League appearances so far this season.
Aside from his goals helping the team, Vydra stresses that Sanchez’s presence in the squad will improve the quality in others, recalling their former days together in Italy.
“He will help Arsenal’s players. When at Udinese, every day he tried to make his team-mates better and it's good when someone helps you,” he was quoted as saying by The Sun.
“I was there as a new player and didn’t speak Italian before that so he helped me with language. He was young but was like a coach and wanted to help.
“He told me about when you turn with the ball and then use speed to get away. Also with shooting, he helped me a lot.”
Given his impressive goal-scoring feat this season, many observers have since labelled the Emirates outfit a one-man team – and on reflection it’s quite difficult to argue with that.
Sanchez has a rightful claim to be the best player in the Premier League currently, a statement which Vydra agrees with as he admits to watching the 26-year-old in action with regularity.
“I think he is the best player in England and now one of the top players in the world,” he added.
“I’m always watching Arsenal games. First Tomas Rosicky and now Alexis. When I see him, I always remember the time at Udinese.”