The centre-back's displays have improved over the last year after initially struggling to settle at the Emirates Stadium, and he says talks are underway regarding fresh terms
Goal exclusively revealed in September that the Germany international had opened talks with the Gunners over a new deal, with his current contract expiring in 2015.
The 29-year-old joined Arsenal in August 2011 and initially struggled to adapt to the pace of the Premier League - but he is now showing his best form having struck up a solid partnership with Laurent Koscielny.
|3/1||Arsenal are 3/1 with Coral to be the top London club this season|
"I am very happy here," he is quoted as saying by the Evening Standard. "The first year was tough for me, a very tough challenge, but the club and the manager always trusted me in a special way.
"I got a big injury in my first year, so I took my time to settle down completely and there were a lot of reasons.
"I think it is a little reward that we are talking [about a new contract], because I still have one-and-a-half years left. There is no rush but it seems that some people are delighted with my performances at the moment. I am pleased with the situation.
"It took me a while to get to that level. But the manager always trusted me and said I was intelligent enough to cope with problems."
Arsenal have benefited from Mertesacker's upturn in form and currently top the Premier League table.