The Chile international ended up signing for the Red Devils from the north London side after having been relentlessly linked with a move away from The Emirates for months.
Sanchez ended up joining Manchester United as part of the same deal which saw Henrikh Mkhitaryan head to Arsenal.
The 29-year-old scored his first goal for Manchester United last weekend when he netted from the penalty spot in the 2-0 win over Huddersfield Town.
Now, in an exclusive interview with Arsenal legend Thierry Henry, the Chile international has opened up about his decision to quit the Gunners and sign for Manchester United.
Speaking to Sky Sports, Sanchez said: “I think that Manchester United, since I was young – and I’m not just saying this because I’m here, I’m an honest guy and I never lie – I think it’s the biggest club in England. That’s what I think.
“There are lots of big clubs, and having played for Arsenal, they are also one of them. It’s a huge club and I was there.
“But coming here, looking at the badge, I think United have to win everything because it’s such a big club. The club crest says it all.”
Sanchez will be expecting to start for Manchester United when the Red Devils return to Premier League action on Sunday afternoon with a trip to Newcastle United.
The Chilean will be hoping to at least help the Red Devils finish as closely to leaders Manchester City in the Premier League table as possible.
The Red Devils will take on Sevilla in the last 16 of the Champions League later this month.
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