Solskjaer was furious after Cristiano Ronaldo was denied two strong appeals for a spot-kick in a 2-1 win at West Ham in the Premier League last weekend. The Hammers got their revenge by knocking United out of the League Cup on Wednesday with a 1-0 victory, but Solskjaer's men again felt hard done by when Jesse Lingard was not awarded a penalty.
Back in January, Klopp erroneously claimed United had been awarded more penalties in Solskjaer's two-and-a-half years in charge than his first five years at Anfield.
"We just have to hope that we get what we deserve. We should have had three pens in the last two games," Solskjaer said on Friday. "I don't know, but there was a certain manager last year who was starting to worry about us getting penalties and after that it seems like the decisions are more difficult to give."