AMAD came disconnected the seat to erstwhile again animate Manchester United to victory.
Diogo Dalot and Kobbie Mainoo slotted location midway done the archetypal fractional arsenic United cruised into the past 16 of the Europa League.
Red Devils left-back Tyrell Malacia picked up an aboriginal paper for a chopping situation that near Florin Tanase needing lengthy treatment.
Mainoo past missed a gaping accidental from 10 yards.
And Rasmus Hojlund headed a transverse from Lisandro Martinez consecutive astatine the keeper.
But contempt dictating possession, United failed to interruption though successful the archetypal period.
Boss Ruben Amorim replaced full-back Malacia and midfielder Toby Collyer with attacking widemen Alejandro Garnacho and Amad Diallo for the 2nd period.
And FCSB inactive struggled to make immoderate momentum, fto unsocial chances.
United midfielder Christian Eriksen swerved implicit a teasing free-kick that Lisandro Martinez nodded conscionable wide.
And the extremity United deserved arrived connected the hour.
As truthful often recently, Diallo was astatine the centre of if, squaring the shot crossed the six-yard container for Diogo Dalot to slot successful astatine the backpost.
Mainoo, who was progressive successful that opener, past doubled the Red Devils' pb 8 minutes later.
Alejandro Garnacho gets into grooming with Man Utd archetypal squad
Sub Alejandro Garnacho pulled the shot backmost for the England midfielder to descent it calmly home
Leny Yoro and Casemiro past came connected for Eriksen and Martinez, with Ruben Amorim believing the occupation was surely done.
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