Following the acquisitions of Mathieu Debuchy from Newcastle and Calum Chambers from Southampton, 22-year-old Jenkinson moved further down the pecking order at the Emirates Stadium and has subsequently agreed to join West Ham.
It was reported that a number of Premier League clubs chased the full-back’s signature during the transfer window, though it is believed that Sam Allardyce’s Hammers have led the pack from the off.
The season-long loan will provide Jenkinson with some much-needed playing time, and the signing shows intent from West Ham, who have also brought in youngster Cheikhou Kouyate, Aaron Cresswell and Mauro Zarate.
"I'm clearly seen as a big part of things here and hopefully I can prove my worth here because it is an important year for me," said Jenkinson.
"I was flattered to have a lot of options but deep down, if I was being honest with myself, West Ham was always the place I wanted to go to.
"It's one of them where I wanted to do the right professional thing and consider all the options, but in the back of my mind it was always West Ham and I'm just so glad it's all worked out how I wanted it to in the end.
"It will be brilliant to play here. I've got a lot of friends who are West Ham fans and I know how good the supporters are here.
"You get a great atmosphere here and the fans are great, so I just can't wait to get a West Ham shirt on and get on the pitch and play."
Arsenal's English defender Carl Jenkinson celebrates scoring their second goal against Norwich City
This temporary deal makes perfect sense both for Jenkinson and Gunners boss Arsene Wenger. The former Charlton full-back is an Arsenal fan and would love to be involved at the club in the long-term but would need first-team football week-in-week-out to aid his development. Wenger also gets the chance to look at Jenkinson as a regular starter - can he rise to the responsibility of scrapping it out with the Hammers.
However, considering the outlay on Debuchy and Chambers, you have to wonder what Arsenal will do with the trio in the long term. Is Wenger expecting one of the pair to struggle? Will he try to convert Chambers - who is a flexible player - into a centre-half or a defensive midfielder? Or is he just delaying the inevitable fact that Jenkinson probably isn't good enough for a team challenging for titles? Only time will tell...
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- Calum Chambers
- Mathieu Debuchy