The Slovakia international made his return to action for Liverpool’s Under-21 side against United on Friday after a three-month spell on the sidelines due to a hamstring problem.
Flanagan has recently overcome an injury nightmare of his own after the England full-back spent over 18 months out due to a troublesome knee injury.
The 23-year-old dropped to the bench for Liverpool’s 2-0 victory over United in the first leg of their Europa League last-16 clash last week.
However, the Liverpool pair looked in high spirits after an apparently long journey ahead of Thursday night’s second leg at Old Trafford.
Skrtel wrote: “Me and my boy @jonflan38 after nice 6 hours on the coach…😴😡 but flanno is smiling as always…”
United are unbeaten in ten European home games (W8 D2), and have recovered from a 2-0 away defeat to win a European tie more than once, perhaps most notably beating Barcelona 3-0 at Old Trafford in the 1983/84 European Cup Winners’ Cup quarter-finals after a 2-0 first-leg loss.
Liverpool kept a fourth successive clean sheet in the first leg – one more in the second leg and they will match SSC Napoli’s Europa League record for successive games without conceding.
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