Portugal will take on Denmark in the Nations League minus Cristiano Ronaldo for the first time.

Image: Ryan Pierse - FIFA/Getty Images

The final international window of the year has arrived, and with it, the decisive rounds of the Uefa Nations League group phase.

Across the continent over the coming days, matchdays five and six will settle the elite landscape: the top two sides in each League A quartet punch tickets to March’s quarter-finals, third-place finishers drop into high-anxiety relegation play-offs, and bottom sides suffer direct demotion to League B.

From Milan to Madrid, the margins are razor-thin, but all eyes are trained on Braga and the looming heavyweight clash between England and Spain.

Life beyond CR7

For more than two decades, Portuguese football operated around a singular gravitational pull. That era is officially in the rearview mirror. Following his international retirement after a record 234 caps and 146 goals – punctuated by recent friction with manager Jorge Jesus – Portugal step onto the pitch without Cristiano Ronaldo leading the line.

Sitting atop Group A4 with a flawless record, the Selecao host Denmark at the Estadio Municipal de Braga needing just a solitary point to lock up top seeding. The intrigue, however, lies in tactical evolution. Without the 41-year-old a focal point, does Jorge Jesus’s system hit a higher ceiling?

With the dynamic pressing, pace, and fluid interchange of Rafael Leao, Goncalo Ramos, and Pedro Neto, Portugal look younger, faster, and far less predictable.

Meanwhile, behind them in A4, Denmark and Erling Haaland’s Norway scrap for the second quarter-final berth, while winless Wales fight for survival.

Group A3 drama: The road to Madrid

The blockbuster narrative of the entire window belongs to Group A3, where Spain and England are on a collision course for Sunday’s showdown at the Riyadh Air Metropolitano in Madrid.

First, both must navigate tricky Thursday hurdles. Group leaders Spain arrive in Prague to face Czechia without their talismanic teenager Lamine Yamal, who is sidelined with knee discomfort following Barcelona's weekend action.

With Luis de la Fuente managing fitness ahead of the weekend, Liverpool’s Víctor Muñoz provides late reinforcement. Meanwhile, Thomas Tuchel’s Three Lions host Croatia at Wembley, hunting three points to mathematically cement a top-two finish.

Yet Thursday is merely the prelude. Sunday’s Madrid clash is a high-stakes rematch of their breathless September encounter at Wembley, where Spain edged a 3-2 thriller. With top seeding in Group A3 and quarter-final momentum at stake, Sunday represents Tuchel's biggest tactical test yet against the reigning continental kings and world champions. 

Heavyweight collisions: Milan and beyond

Thursday night also delivers pure continental drama in Group A1 as Italy and France collide at the San Siro in a direct shootout for group supremacy. Following their combative 1-1 draw in Saint-Denis, both heavyweights know a victory secures prime quarter-final seeding, leaving Belgium lurking for any misstep.

Over in Group A2, Germany and the Netherlands resume their classic rivalry on Monday night, locked together atop the pool while Serbia and Greece fight to dodge the drop.

With knockout berths, continental seedings, and tournament survival on the line, this window offers no room for error. Whether it is Portugal testing life without Ronaldo, Spain adapting without Yamal, or England hunting revenge in Madrid, the stage is set for a frenzied week of international football.