Both players left Southampton to join two of the world's biggest football clubs respectively, and Lallana has thrived under Jurgen Klopp whilst Shaw has struggled for both form and fitness under the "Special One" following his season-ending leg-break last year.
After his side's much-needed 3-1 win at Swansea prior to the international break, the Portuguese manager said: "In every sport, many times you play and you are not 100 per cent."
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His damning words seemed to be aimed at English defensive duo Shaw and Chris Smalling (among others), but since then, it's emerged that Smalling broke his toe whilst Shaw posted a video to Twitter of him working out over the weekend.
Mourinho has publicly criticised Shaw during the current campaign for some of his displays, however Lallana has hailed both the physical and mental toughness of the talented 21-year-old.
Lallana defends Shaw
The 28-year-old playmaker, who spent three years with Shaw at St Mary's, told the Daily Star: "I was with Luke Shaw at Southampton. He's a very strong boy. He's had a horrific leg injury.
"You don't come back from that without being mentally and physically strong. You don't come back from a leg break like he had without having difficult times mentally on your own."
Shaw played the full 90 minutes of United's 2-1 loss to Fenerbahce, but he was then left out of the squad for the trip to South Wales three days later, so it remains to be seen whether or not the left-back will be involved for his team's huge game against Arsenal this weekend.
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