German Sky Sports reporter Florian Plettenberg reported that Arsenal is pushing for the signing of Valencia's Mosquera.
reporter said: "Arsenal is now pushing to sign Mosquera, and negotiations have begun."
"Although Leipzig has reached an oral agreement with Valencia, Leipzig has cooled down recently due to soaring asking prices."
"Leverkusen and Bayern are also paying attention to him, and Arsenal is now in the lead."
20-year-old Mosquera plays as a defender. He made 37 appearances in La Liga last season and scored 1 goal.
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