ABERDEEN manager Derek McInnes has signed a new contract that will keep him at Pittodrie until at least 2020.

The former St Johnstone and Bristol City boss turned down Sunderland earlier this summer to remain with the club he guided to second place in the Ladbrokes Premiership last season.

Assistant manager Tony Docherty has also penned a new deal tying him to the Dons for the next three years.

"We're delighted to extend our contracts and both Tony and I are looking forward to the season ahead," McInnes said.

"We've still a lot to do both on and off the pitch and as I've mentioned on several occasions I want our tenure here with Aberdeen to be remembered fondly as a successful period and one where we were winning trophies.

"I am committed to trying to bring more success to the club and with the excellent squad of players we have and the backing of our brilliant supporters, it is important we keep driving forward both on and off the pitch and maximise our full potential as a club.

"I love working for the club and our aim must always be to have a competitive, confident Aberdeen team on the pitch, producing young players and training professionally in a modern facility that is in keeping with the ambitious club we are. We require the full support of the city and all our supporters to help us achieve that.

"As well as creating a professional environment, strong relationships are key if you want to be successful in football and we have that both with our players and supporters."

The Dons travel to Bosnia-Herzegovina on Thursday to face Siroki Brijeg in the second leg of their Europa League second qualifying round tie, after being held to a 1-1 first leg draw last week.

They have been busy in the transfer market so far this summer, bringing in Greg Tansey, Greg Stewart, Ryan Christie, Nicky Maynard, Gary Mackay-Steven and Kari Arnason.