The Chilean was part of the heavily-rotated line-up that played out the draw.
"I think all of us playing are thinking about Tuesday's match, and those who stayed at home too," the midfielder told BeIN Sports after the final whistle.
"The Champions League is a dream for everyone.
"It'll be difficult, but we earned a good result in Manchester.
"We'll go step by step.
"First we have Manchester United and then we'll go for another three points in the league."
Vidal also discussed the difficulty of the match against Huesca, a team fighting for their lives.
"Most of those who don't play as much were playing today," he said. "They did well against a team that is fighting at the bottom of the table.
"It was a very intense match and a draw is a fair result for both teams.
"The three of us in midfield had never played together before and it was a new system.
"It was all different.
"The pitch was quite dry too, but the important thing is we didn't lose."