Southend manager Steve Tilson has completed the signing of Arsenal defender Kerrea Gilbert on a six-month loan deal.
The 20-year-old has played nine times for the Gunners, with two of those appearances coming from the substitutes bench.
The defender told Southend's official website: "I'm hoping to get a lot of first-team games here. I could have gone to a few teams but Southend were definitely the best option for me. It was an easy choice.
"I can't wait for the season to kick off. I just want to do my best for the team, play the best I can and take it from there."