Giggs reckons Mauricio Pochettino#8217;s Tottenham could pose a threat to City too.
United and City are set to renew their rivalry at Old Trafford on Sunday December 10.
Giggs, who won 13 titles with United, still thinks his old side have what it takes to contend with City though.
United are looking to build on the Europa League and EFL Cup success they enjoyed under Mourinho last season as they go in search of their first title since 2013.
Mourinho#8217;s men have fixtures against Newcastle, Basel, Brighton, Watford, Arsenal and CSKA Moscow before that clash.
#8220;Tottenham have also been impressive and I had thought they would struggle going for the title with the Wembley and playing in the Champions League but they#8217;ve gotten over it really well, so I#8217;d have them third in the mix,#8221; he added.