Alexis Sanchez stepped foot on the Camp Nou pitch for the second time since he left Barcelona in 2014, and he was received with applause by the home fans.
The Chilean came back from a knee injury to play as a substitute in Man United's 3-0 defeat by Barca on Tuesday as the Catalans reached the UCL semis.
Alexis is not having his best season, playing 24 games and scoring two goals, setting up four others.
He came on for Lingard in the 80th minute and with the tie already sealed in Barca's favour, Solskjaer wanted to give him a run out.
Ter Stegen stopped him from scoring in the final stages with a fine save. Barca fans appreciated his effort between 2011-14 and generously clapped him.
He won one league, one cup, a Spanish Super Cup, a European Super Cup and a Club Worl Cup.
Alexis made one return previously, on March 16, 2016, with Arsenal, in a 2-1 defeat.