The former Liverpool left-back 'likes' the Spaniard but admits he was poor at Wembley.
Indeed, Riise is a fan of the 23-year-old and hopes he will become stronger following the huge criticism he has received in the wake of the Capital One Cup final.
But he can't deny just how poor Moreno's disastrous display was at Wembley:
Moreno getting loads of stick from yesterday's final. Will make him stronger I hope.— John Arne Riise (@JARiiseOfficial) February 29, 2016
Was caught out of position yesterday. I like him yes but have no problem saying he played poor yesterday https://t.co/TFX1TDOR7p— John Arne Riise (@JARiiseOfficial) February 29, 2016
After the game, Jamie Carragher insisted that Jurgen Klopp must bring John Flanagan to the fore at left-back as Moreno's performances simply aren't good enough.
Among supporters, however, the role of others has been questioned. Was Moreno Liverpool's worst player or were some of his team-mates just as bad?
James Milner showed plenty of work-rate as usual and enjoyed some decent spells. Throughout, though, the Liverpool man actually looked like a Championship player out of his depth - producing awful set-piece deliveries and almost always losing the ball. His most common reaction was a simple shake of the head. Not good enough.
Then there was Emre Can. His penalty was classy and some of his tackles superb. But the majority of the German's display saw him simply run forward a little, stop, turn around and pass either backwards or sideways. It was like the Joe Allen of old - on current form, Allen would have been a much better bet.