The source added: "Things are never going to be completely lovey dovey between them but the fact they're communicating is a start."
Liam, 39, was at Manchester City's Etihad Stadium earlier this month to witness the team's historic 3-2 victory against Queen Park Rangers which clinched them the title, while Noel, 44, was on tour with his group the High Flying Birds and watched the game in a bar in Chile.
Since the demise of Oasis, Liam - who has formed new band Beady Eye - and Noel have continued their feud by publicly criticising each other and at one point the singer took legal action against the guitarist for claiming he missed Oasis's V Festival show in August 2009 because he had a hangover.
However, both brothers have admitted they still "love" each other despite their fractured relationship and have indicated they might be interested in reuniting to celebrate the 20th anniversary of their seminal second album (What's The Story?) Morning Glory in 2015.
- BANG! Showbiz