Louis van Gaal says Manchester United's top-four hopes would have been over had they lost to Manchester City, but believes they now have a "big chance" of Champions League qualification

Marcus Rashford's goal earned a 1-0 derby win over City on Sunday.

Van Gaal's side are sixth in the Premier League, but lie just a point behind their local rivals in fourth.

"The gap would have been too big if we had drawn or lost. It would have been very difficult," said the United boss.

"Now it is in our own hands but we have to win our games. We have more home matches than away and we don't lose so much at Old Trafford - so we have a big chance."