A point was all Spurs needed to seal their qualification into the last 32 and while goals from Gareth Bale, Heung-Min Son and Dele Alli secured progress with a game to spare, the visitors were not at their best in Austria.
LASK dominated the first half and caused problems throughout, with the away side’s back-up goalkeeper Joe Hart at fault for two of the goals.
Asked what he learnt at the Linzer Stadion, Mourinho insisted: “Nothing new really.
“The fact that the Europa League group phase doesn’t motivate some of the players, I knew it.
“That some players are fundamental for us and I always need on the pitch in any circumstance, a couple of these players to give a little bit of balance to the team.
“As an example, (Pierre-Emile) Hojbjerg and Sonny, without them I don’t think we would have a positive result. Nothing really that I learn. The players know and I share my feelings with them, I am normally right.
“When I saw the warm-up before the game I had a feeling and I told the players before the game that there was a huge difference in intensity, communication and enthusiasm in their warm-up and our warm-up because I was looking at both. Nothing surprises me.”
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Kane ‘not in big trouble’
Mourinho provided a positive update on Harry Kane, revealing that the striker is “not in big trouble” and should be fit to face Arsenal in the Premier League on Sunday.
Mourinho revealed on Wednesday that the England captain would miss Thursday’s trip to Austria with an unconfirmed issue, and that the striker had “a chance” of being fit for the north London derby.
“I believe he is going to be fit,” Mourinho said in his post-match press conference.
“I’m not sure – he’s on treatment.
“But I could be now doing some bluff or trying to pretend that he’s in big trouble. He’s not in big trouble. I believe that he’s going to play.”
Tottenham go into the weekend at the top of the Premier League table having gone unbeaten since the opening day of the season, with Kane’s form a crucial factor in their success.
Kane has scored seven goals and contributed nine assists in 10 Premier League appearances this campaign, forming a formidable partnership with Son Heung-Min, who has nine league goals.
Spurs earned a hard-fought point in a goalless draw at in-form Chelsea last weekend, but will expect their forwards to have more opportunity against an Arsenal side low on confidence.
Mikel Arteta’s side have gone three Premier League games without a win and sit 14th in the table going into the match, which is live on Sky Sports.