It was certainly a deadline day to remember for Arsenal on Wednesday.After what was the craziest January transfer window in the history of the sport, the Gunners were still trying to get the Pierre-Emerick Aubameyang deal over the line on the final day.Borussia Dortmund needed Michy Bathshuayi and Chelsea demanded Olivier Giroud for Arsenal to complete the £55m signing of the Gabon striker.Eventually, everything was all sorted, but Aubameyang's arrival was actually overshadowed by another piece of business done by the Gunners on Wednesday.Well, it wasn't officially confirmed by the club, but trusted BBC Sport journalist David Ornstein broke the news that Mesut Ozil had agreed a new three-and-a-half year contract with the club.After losing Alexis Sanchez to Manchester United, the thought of maintaining the services of their other prized asset was a huge boost.And, just 24 hours later, the news was confirmed by both Ozil and the club.The German playmaker took to Twitter to announce the signing of the contract and his message to the Arsenal fans was just brilliant.

TWEETS: OZIL IS STILL A GUNNER

Must be so refreshing to see a world-class player that committed to the club after the losses of Robin van Persie, Cesc Fabregas and Samir Nasri in the last few years.

Naturally, Arsenal fans were ecstatic at the news and some of the replies on Ozil's tweet highlight what a watershed moment this could be for Arsene Wenger's side.

Oh, and Hector Bellerin uttered the words that every fan will also be thinking...

ARSENAL FANS & BELLERIN REPLY

The main focus for Arsenal now has to be building a team around Ozil during his peak years.

The signings of Aubameyang and Henrikh Mkhitaryan are a good start, but a sturdy midfield base and a competent defence are what is most needed in the summer.

Arsenal have one of the Premier League's finest on their books and now, the must repay his loyalty.