United were down 2-1 at half-time when Hargreaves and Scholes, working as pundits for BT Sport, insisted Solskjaer should make changes at the break.
Of course, the Red Devils went on to win the clash 6-2 too all but book their place in the Europa League final.
After being told pundits Owen Hargreaves and Paul Scholes would have made midfield changes at half-time, Solskjaer said: "It's easy up there thinking who should play... but who should not play?
"That's a very good team, it worked really good against Tottenham. Mason Greenwood should be disappointed not to be playing but it's about balance. Maybe those two should try to leave players out and pick a team with balance.
"We know we have got creative players who can create big moments. Paul Pogba's position today was very good in that position, he's allowed some freedom. He's got the foundation behind him. The difference today is we took most of our chances.
"The character showed that they came back and didn't lose their heads. Maybe five or 10 minutes at the end of the first half, we didn't look great but we got ourselves together. The two goals are junior, schoolboy errors that shouldn't happen at this level."