Two months after completing his move from the Potters to join the Reds, Carragher praised Shaqiri's impact on Liverpool's League performances so far this season despite his few minutes.
Speaking in an interview with BetVictor, Owen said: "This is a real test of Liverpool's title credentials and a win at Wembley will go a long way to proving their doubters wrong".
'Liverpool are one of the biggest teams in the world.
Sadio Mane has traveled more than any other player from both sides - over 11,000 miles - and having been Liverpool's best performer so far this season, Klopp will hope the Senegalese can find the energy.
"That for me is more important".
ISS images show massive Hurricane Florence from 400 km up
Florence is becoming more of a threat to more people - now including some in Georgia - in more ways. "Because it's Mother Nature". And yet Florence's eye is still well out to sea. "On a scale of one to 10, I'm probably a seven in terms of worry, she said".
"I think it's a brilliant buy for Liverpool", Carragher told Sky Sports.
Of course, you accept it because that's modern football, you just need to try and focus on the game but these games can often be slow starting and low on quality, because the players aren't fully rested and concentrated. It will be a very tough opponent.
Klopp will be hoping that no more of his players return from worldwide duty injured, but Spurs have already revealed that two otherwise-guaranteed starters are unavailable.
After a summer spending spree which saw Liverpool bring in several fresh faces, the general consensus is that the reds can mount a genuine title challenge under Jurgen Klopp this season. The Watford crowd will be well up for it after the run they have been on, but United will have a plan and if they can be calm and control the game, it should be enough for three points.
"As a United fan, that's a worry because it is still that mentality of "anyone but them".