Insert Post coming from another site in the network

Hi,

currently I have two sites in my wordpress installation

site1.myblog.com

and

site2.myblog.com

I’d like to know if there is a plugin or an option so that I can add an excerpt and photo from site2 on site1 homepage that would link to the original post on site2.

Basically the person visiting site1 homepage would see a mix of posts coming from site1 and site2 without being able to tell the difference until they click the link on a site2 post where it would appear on site2