have a litle experience in this field.
You can use twitterfeed.com/ to feed a RSS feed into your twitter account. (Pats do it) basically it means anything thats added to the Pats website is also announced through twitter. They provide the first few words and then a link to the website
You can set your facebook page to post on twitter too. So if you update facebook, or add a link, photo, event etc etc it gets announced on twitter. If its just an update and less than 140 charachters it remains just text. Any more and a link is provided
At its basicest, if the guy looking after the facebook just cuts'n'pastes from the website it'll still be 'official'. As long as the club know who's doing it so they can get something up, it shouldn't be a problem. facebook is handy for little bits of news that don't neccesarily involve whole web posts
Have a look at
http://facebook.com/stpatsfc and
http://twitter.com/stpatsfc