Back on the 30th of November I posted news that Hurt Locker's Jeremy Renner was rumoured to be in talks to play Hawkeye in the upcoming Avengers movie. On the 5th of December Dark Knight posted the news again in full as it'd flooded the web and everyone believed it was true. Renner denied the whole thing and so did Marvel... at that point.
Now the rumour has resurfaced once again with The Hollywood Reporter stating that Renner is now in final negotiations for the role. He was crossed of of the Avengers list originally simply because he was due to appear in Paul Thomas Anderson's "Battleship" movie. Now that he's not been picked up for that particular role he's free, and with all the positive feedback given to him possibly playing Clint Barton I think even if he wasn't a shoe-in before, he certainly is now.
No confirmation from Marvel at this time, but of course as with all the current Marvel rumours, it's literally only a matter of time.
Fingers crossed...