Standard Champions league tactics dictate that Inter should play for a draw at Trafford and then go for the win at San Siro. A good result for them would either be 0-0 preferably 1-1 so they have the away goal and they wouldn't be too disappointed with 2-1 so the way i see Inter will just come out very defensive and really just look to capitalise on any Man Utd mistakes in midfield/defense and those look scarce in defense given the recent quality of the man utd defense