Eyebrows were raised when Spanish superstar Cesc Fabregas left Barcelona for Chelsea in this transfer window. Many had expected the midfielder to rejoin Arsenal, as the north London outfit had first refusal on their former hero.
However, as Arsene Wenger takes his time over transfer plans, it appears that Fabregas was never on his radar. A surprise, perhaps - but the Spaniard isn't really the type of player needed at the Emirates right now.
The Gunners have the likes of Mesut Ozil, Aaron Ramsey, Jack Wilshere and Santi Cazorla in north London, which meant Wenger kept his hands in his pockets. However, whilst the Arsenal chief was right to stay away from Fabregas, he was wrong to not battle Chelsea in their pursuit of another La Liga superstar.
The man Wenger should have targeted, however, was Atletico Madrid striker Diego Costa. The Spanish international may not have had the most successful World Cup, but he's certainly one of the best strikers in world football.
Helping Atletico secure the La Liga title, Costa scored on 27 occasions - only behind Lionel Messi and Cristiano Ronaldo in the rankings. He may have failed to show his class in this summer's World Cup, but he could become a major hit in England's elite division next term.
He will be a wonderful asset to Chelsea, but why didn't Wenger at least attempt to make an offer? After all, despite the club insisting they've met the player's release clause, the move has taken an extremely long time.
Chelsea in attack
Arsenal's loss will certainly be Chelsea's gain, and they will be a forced to be reckoned with next season. Jose Mourinho's side disappointed last term as they failed to land silverware, so the additions of Fabregas and Costa will only help their cause.
With Costa, Eden Hazard, Oscar, Willian and Co. all starring at Stamford Bridge, Mourinho will believe he has the quality to make a serious challenge on all fronts in 2014/15.
Can the same be said about Arsenal? There is still a long way to go in this transfer window, but Wenger must add to his squad in the next month or so. A striker has to be a priority for the Gunners, but they may regret not making a move for Costa.
After all, there aren't that many world class forwards available. One that does appear to be on Wenger's radar - despite not being an out-and-out striker - is Barcelona superstar Alexis Sanchez.
He would certainly prove a major coup for the Arsenal boss, and could play in a number of roles in Arsenal's attacking line. He's certainly a major threat, having proved that at this summer's World Cup. Perhaps, then, with Costa set for Chelsea, Sanchez is the man that must be signed by Wenger.