Mike Arteta insists there are more secret weapons Arsenal can throw at Liverpool as they bid to ambush the Premier League leaders.
Merino - who scored with a header and a volley - was used as an emergency striker and Arteta said: “There will be players like that used in different roles.
“If a player is not performing, or there is a yellow card or fatigue, we have prepared for those scenarios.
“He is a massive, massive threat to the opposition,” added Arteta.
He’s a great talent.”
The victory was the perfect response after Arsenal’s midweek Carabao Cup defeat to Newcastle and Arteta added: “There was a lot of noise about how much did we want it(
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