The club have failed to put together a string of positive results since the New Zealand international arrived at the Recreation Ground last year.
Despite speculation linking him with a move away from Bath, the 28-year-old has insisted that he is happy to stay put.
"My contract is for three years so I am looking forward to next season," Donald told Sky Sports News. "It will be good to get a good pre-season under my belt as it is probably something I need.
"Bath is a great city and we've a superb bunch of guys here but for whatever reason we've just not managed to string together the results."
Donald scored the winning points as New Zealand defeated France in last year's World Cup final.