Never even heard of the South American Inter side and I have been playing FIFA for over 15 years!
Whats the background with that if true? He wanting to get closer to home, legs gone?
Don't follow Brazilian football, but it's a big club apparently
http://en.wikipedia.org/wiki/Sport_Club_Internacional (Forlan already included in the 1st team

)
If this happens -looks like it will- it'll be a surprise because he had stated before that he would like to play for Sao Pablo someday, just like his father did.
As for the background of it, he doesn't seem to be on Inter's plans as they have already signed Palacio from Genoa and are reportedly looking for another striker. It is said that "the other" Inter is willing to match his wages, and he on his turn will be happy to play regularly and stay fit for the 2014 World Cup (lets not forget he's 33 already).