Despite Sunday's 4-0 win over Chelsea, Scholes thinks Solskjaer could be light in midfield options and must continue playing a counter-attacking system.
He told Optus Sport: 'I'd be worried about that.
"I thought Pereira was a little bit quiet today. The lad has got ability, he's a young player, he's not played much football.
"I think against the better teams in midfield they may get found out. Which is why I'm saying against the better teams – counter-attack.
"I think looking at today they are perfectly set up to be a counter-attacking team.
"I just don't think they are a good enough team to do that."