A Karim Benzema double against Villarreal on Thursday night confirmed Los Blancos as champions with rivals Barcelona stumbling to a 2-1 defeat against a 10-man Osasuna.
They come up against a Leganes side battling to beat the drop, sat in 18th place and currently going down as things stand.
While Madrid's domestic season is essentially over, they still have the Champions League to play in August, where they will look to overturn a 2-1 deficit against Manchester City.
Date, venue and kick-off time
Leganes vs Real Madrid will be held at Estadio Municipal de Butarque on Sunday, July 19, 2020, with kick-off scheduled for 8pm BST.
Prediction: Leganes 1-1 Real Madrid
Madrid have won all 10 games since the restart to claim a first La Liga title since 2016-17, while Leganes have strung together an impressive three wins and a draw from their last four.
The home side are just a point behind a desperate Celta Vigo and will look to capitalise on a Madrid side with nothing to play for.
Zinedine Zidane's men will also have both eyes firmly on the Champions League and will under no circumstances want any long-term injuries.
The home side will face a crucial final day without the suspended midfielder Ruben Perez, while Alexander Szymanowski also remains sidelined through injury.
Zidane may opt for rotation due to the August's Champions League restart.
The likes of Federico Valverde, Vinicius Junior and Marco Asensio could all be drafted in with the League already wrapped up.
Gareth Bale and James Rodriguez may have already played their last games having been left out of the squad.
How to watch
Live stream: With games due to be shown on TV on Channel 435 on Sky, fans can also live stream the matches online via the Premier Player app.
Head to head (h2h) history and results
Unsurprisingly, it's Real Madrid who have got the better of this fixture in the past, with seven wins from 10 in total.
Leganes have two wins of their own, with the remaining result a draw.
It was Los Blancos who ran out victors in the reverse fixture earlier in the season, Zidane's men securing a whopping 5-0 win.
Betting odds and tips
- Leganes to win: Between 12/5 and 5/2
- Real Madrid to win: 6/5
- Draw: 11/4
Odds courtesy of Betfair Exchange. Click here to find out more.
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