Aaron, who plays midfield for the Cropredy FC, is in hospital in critial condition after suffering a stroke last Saturday September 5 while on a golf holiday with friends.
Kyle Field has launched a fundraising campaign to help his brother, Aaron, and his family through a GoFundMe web page.
Kyle said: "He's a very avid footballer in the town. He's been an integral part of all the success brought to the club. He's a very bubbly character, and very highly thought of in the area.
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"We're looking to raise awareness about his recovery during this difficult time."
In less than 24 hours the fundraising campaign has already raised more than £8,000. But the family is looking to raise as much as possible to help support Aaron.
Anyone who would like to make a contribution to the fundraising campaign for Aaron Field can use the following GoFundMe web link: https://www.gofundme.com/f/24prpohf9c?sha
Friends and fellow footballers from teams across the Banbury area have already started making donations to help Aaron.
The Cropredy FC team posted the following message about Aaron on their Tweet page: "We are deeply saddened to hear that our player Aaron Field suffered a stroke on Saturday, an integral part of our club for a number of years, a young lad, top bloke and about to become a father very soon."
Cropredy's first team squad have donated £500 from last seasons fines pot, and all three teams will donate this weekends match-fees to the fundraising campaign set up to help Aaron.
A spokesperson for the Cropredy FC added: "Aaron has played for the club for a number of years, he's a big character and integral to the clubs first team. You only need to look at how the local football scene has come together to see how popular the ‘Spuddy’ is."
The Moreton Rangers FC who are playing the Cropredy FC this week have pledged to donate a percentage of the gate to the fundraising campaign set up to help Aaron.
The Cropredy FC Twitter feed shows donations have been made by at least four other area football teams, including Bure Park FC, Hardwick SFC, Adderbury Park FC, the Launton Sports Football Club, the Kings Sutton FC and several others.
Kyle Field posted the following heartfelt message about his brother on the GoFundMe page: "On Saturday 5th September 2020 my brother Aaron was discovered on his hotel room floor by one of his friends. Aaron had suffered a bad stroke. A 30 year old man, who is an absolute gentle giant and all round good guy.
"Aaron is currently in a critical state in Lister Hospital in Stevenage (Hertfordshire), and is fighting everyday for us!
"Due to be a father for the first time in November his fiancé Erin is by his side everyday. However, this will be a very long road and will consist of so much care and attention given Aaron pulls through this critical time.
"Aaron has so many people that love him and care about him with friends far and wide. I’m sure this will reflect in what we are trying to do and raise these funds to support Aaron and his fiancé in anything they may need, in day to day life and forward planning for his rehabilitation and recovery.
"Aaron we love you, please don’t stop fighting, we’re all behind you ❤️ Please give what you can Thank you all very much, Kyle, Erin, and all Aaron’s family and close friends."