Rejoice, Arsenal fans - Pierre-Emerick Aubameyang looks like a done deal.The 28-year-old was spotted at Dortmund Airport earlier today and has since landed at Luton and travelled to Arsenal's training ground at London Colney.A £60 million fee has reportedly been agreed between the Gunners and Borussia Dortmund, while Aubameyang is set to sign a contract worth £180,000-per-week.Capturing the Gabon striker is exactly the kind of statement Arsenal needed to make having recently lost Alexis Sanchez to Manchester United.Just when it seemed Arsene Wenger's side could no longer attract the biggest names in world football, they sign one of the best strikers on the planet.And yet, incredibly, they could be about to undo their hard work by allowing another big-name player to join a Premier League rival: Olivier Giroud to Chelsea.Dortmund want Michy Batshuayi to replace Aubameyang which has led Chelsea to Giroud, who has been starved of game time at Arsenal this season.It was reported on Monday a £15 million fee had been agreed between the two London clubs but talks are ongoing.Arsenal fans hate the thought of losing Giroud to Chelsea - and who can blame them - but they've had a change of heart somewhat over the past 24 hours.In order for Giroud to complete a switch to Stamford Bridge, Gooners want Wenger to negotiate a swap deal that would see David Luiz head in the opposite direction.With a move for West Brom's Jonny Evans now dead in the water, Arsenal are crying out for a new centre-back and fans think Luiz is the man they need.

ARSENAL FANS WANT GIROUD-LUIZ SWAP

It's certainly an interesting proposition. Giroud, 31, will soon be surplus to requirements at Arsenal, while Luiz, 30, is out of favour at Chelsea.

A swap deal would benefit both parties: Arsenal would get a world-class defender and Chelsea would get the target man they crave.