Tottenham Hotspur will be without Son Heung-min for the trip to Premier League leaders Liverpool but hope to have their captain back for the upcoming Europa League semi-final, manager Ange Postecoglou said on Friday.

South Korean striker Son has missed Tottenham's last three games with a foot injury and Postecoglou said he was the only injury concern ahead of Sunday's clash at Anfield. Spurs host Bodo/Glimt in the first leg of their semi-final tie on Thursday.

"He's improving, which is positive, but not for Sunday. We'll see (for Thursday)," Postecoglou told reporters.

"It was the first time he got out on the grass today and it's definitely better than what it was.

"It's a foot element, so because it's weight-bearing, you need to give him a bit of rest and time off it."

Liverpool can clinch the league title with a draw against Spurs and while Postecoglou's focus is on the Europa League, where his side can salvage a disappointing season with a trophy, he wants his side to put in a good performance at Anfield.

"We want to go there and compete well against a very good side. It's not about getting through unscathed, you want to get through having played well against a top team," Postecoglou said.

"Irrespective of what's on the horizon, that's still of primary importance to us."

Spurs have lost 18 league games this season, leaving them 16th in the table on 37 points and well out of contention for a European spot next season, but Europa League success would not only secure them silverware but also Champions League football.