Fred was subjected to racist abuse on Instagram after Thursday's 4-2 Premier League loss at home to Liverpool.
Wearing the captain armband, Salah killed the game with his late goal to revive his team's hopes in securing a spot in the UEFA Champions League next season.
The Premier League side will play Villarreal in the final on May 26 in Gdansk.
Solskjaer said he hopes the club's progress this season will convince Paul Pogba and Edinson Cavani to extend their stay at Old Trafford.
Man City moved 13 points clear at the top with a 2-0 win at Crystal Palace on Saturday.
Salah discussed the team's situation in the Premier League this season ahead of the decisive clash against the Red Devils of Manchester.
Manchester City are closing in on their third English Premier league title in four years.
United fans last week breached security at the club's training ground as they protested against the Glazer family for their role in the Super League plot
Solskjaer says giving up on the Premier League title is "not in our DNA" even though their pursuit of runaway leaders Manchester City appears hopeless.
United will face AS Roma for a place in the May 26 final in Gdansk after the Italian side ground out a 3-2 aggregate win over Ajax Amsterdam.
Lingard said a change in environment and shouldering off-field responsibilities were key reasons behind his revival during his loan spell at West Ham United.
Solskjaer said Rashford, 23, was available for the trip to Spain but might not be risked for the entire match.
There is a video to accompany the launch, which challenges United fans to think: "Without diversity, who would we be? What would the club's history books say?"
Manchester City, Manchester United, Leicester and Chelsea currently occupy the top four places in the English top-flight
The British government last month set out a four-stage easing of England's COVID-19 lockdown restrictions.
Guardiola says Manchester United will be "difficult" opponents despite a huge gulf in form between the two sides ahead of Sunday's derby.
The two teams will face off in the UEFA Europa League round of 16 in a match that reminds us of historic UEFA Champions League nights.
Pogba was injured in United's 3-3 draw with Everton on Feb. 6 and has since missed five games in all competitions.
Bruno Fernandes scored twice as Manchester United romped to a 4-0 victory over Real Sociedad in their Europa League last-32 first leg on Thursday.
Parker believes his relegation-threatened team can win "any game" as he plots a Premier League great escape.