Celtic £25million for Kieran Tierney. The Gunners diehard is a huge fan of the left-back and he produced another stellar all-action display in Saturday night's FA Cup tie against Newcastle United.
Mikel Arteta's side were forced into extra-time with Tierney the standout in an otherwise frustrating performance.The 23-year-old's move from Parkhead looks a relative steal in the bloated Premier League market and TV personality Morgan reckons his side have got away with one.
He wrote on Twitter: "Great Arsenal mysteries of our time: 1) Why has goal machine Aubameyang stopped scoring? 2) What the hell’s gone wrong with Willian?
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