Spain goalkeeper De Gea has been the Red Devils’ first choice between the sticks for the past eight consecutive seasons.
And the club are currently in the midst of trying to tie the 28-year-old down to a new long-term contract.
If De Gea puts pen to paper on a bumper deal, he is expected to become Manchester United’s second-highest earner behind Alexis Sanchez.
But while Solskjaer sees the value in his world-class shot-stopper, the interim boss recognises there are a host of players he considers as pivotal to the team.
The Norwegian has got to know his players over the past two months, overseeing their 10 wins in 11 games across all competitions.
Paul Pogba and Anthony Martial were two to show their huge qualities last time out at Fulham in Saturday’s 3-0 Premier League win.
And ahead of tomorrow’s crunch Champions League round of 16 first leg tie against PSG at Old Trafford, Solskjaer has hailed the standard of United’s group.
Asked if there are any players he sees as undroppable, Solskjaer replied: “I have a big strong squad and it’s shown.
“Say Peter Schmeichel was a clear No.1, David is a clear No.1”
Ole Gunnar Solskjaer
“Say Peter Schmeichel was a clear No.1, David is a clear No.1.
“But we have Romero who is fantastic.
“The depth of our squad is very good but we like to play the best XI as much as possible.”
Jose Mourinho failed to get the best out of the side, ultimately resulting in him suffering the sack back in December.
Solskjaer, though, has shown he is able to motivate and organise the team on a consistent basis, while playing attacking football.
And even though the Champions League final is a way off yet, the 45-year-old views it as a realistic goal.
He added: “I think the squad is very capable of winning against anyone and we go in to games confident in our form we are looking forward to the game but you can’t look to far ahead.
“We just have to look at PSG and take the next challenge as it comes, been pleased with the attitude if we keep working every day, we can improve and maybe surprise a few.”