There's a good chance it'll be OK, Ilford reckon that their papers last at least 7 years if stored well, no extremes of heat/damp etc.
In my own experience it's unlikely there's any base fogging with 10 year old Multigrade, it may have slowed a little and have a very slight drop in contrast. To test for base fog just process a small piece for your normal dev time (unexposed) and compare to a piece unexposed/undeveloped but fixed.
If there's a slight drop in contrast you could use a more contrasty developer, like the Part B of Dr Beers, I used to use ID-14 an Ilford contrast developer.
I had a big clear out 3 years ago and tested quite a few boxes & rolls of old paper and only the warm-tone papers had deteriorated beyond being remotely useable, all the plain Bromide papers were fine some from the 1960's sloww, maybe dropped a grade none had base fog, the early Multigrade papers Kodak & Ilford had dropped contrast slightly but they were well over 10 years old.
So just give some a try.