Tottenham Hotspur are braced to lose top scorer Harry Kane for another extended period after the England worldwide limped off during the FA Cup quarter-final win over Millwall at White Hart Lane.
"It was an important win for us, not just for The FA Cup but for the league as well - it was important to keep our form and keep getting the goals".
Tottenham player ratings: Vorm 7; Dier 7, Alderweireld 7, Vertonghen 8; Trippier 8, Wanyama 8, Winks 8, Davies 7; Son 10, Alli 8; Kane 6.
Mounted police in riot gear struggled to keep order at times, with minor skirmishes also reported after the game.
Leicester complained to the FA about "abuse, provocation and intimidation" of their players fans and staff in their fifth round defeat to Millwall.
He showed that he is more than capable of filling the void after he chipped in with a a splendid hat-trick, and Vincent Janssen put his foot down for a potential starting spot in Kane's absence.
Alli then made it 4-0 when he tapped in at the back post from Eriksen's precise, driven cross and Janssen got his first Spurs goal from open play by tidily finding the corner of the net with a first-time effort from just inside the box.
And Son completed his hat-trick in the final minutes as his well hit volley crept under the body of Millwall goalkeeper King.
The England global picked up an ankle injury in September against Sunderland and missed 10 games across all competitions as a result.
They will be joined in the highest-quality of last four draws by Arsenal and Manchester City, who won their quarter-finals on Saturday, and Chelsea or Manchester United, who meet in the remaining sixth round tie at Stamford Bridge on Tuesday (AEDT). It is also looking to lock down second place in the Premier League, which it only holds on goal difference.
In Premier League action on Sunday, Liverpool managed a 2-1 victory at Anfield. Georginio Wijnaldum leveled with the last kick of the first half and Emre Can struck the victor from distance with around 30 minutes remaining.
"We've enjoyed this competition - its' a been a great distraction for us", Harris enthused. "We've got nothing to lose and everything to gain". Usually when we are not at our best, we have lost. Not too much football today.
After receiving treatment behind the goal, Kane limped away and a shake of the head towards Pochettino saw him replaced by Christian Eriksen.