Cristiano Ronaldo trains with Portugal after sealing Manchester United move - in pictures

Veteran attacker takes on Ireland in World Cup qualifier on Wednesday fresh from 'dream' switch back to Premier League

Portugal's Cristiano Ronaldo at the Cidade do Futebol training camp in Oeiras, outside Lisbon, ahead of their World Cup qualifier against Republic of Ireland. AFP

Portugal forward Cristiano Ronaldo who has completed a move from Juventus to Manchester United. AFP

Portugal manager Fernando Santos oversees training on Tuesday, August 31. AFP

Left to right: Pedro Goncalves, Joao Palhinha, Ruben Neves, Diogo Jota, and Danilo Pereira. EPA

Left to right: Goncalo Guedes, Cristiano Ronaldo, Ruben Dias and Raphael Guerreiro during training. EPA

Portugal's Cristiano Ronaldo controls the ball at training. EPA

Portugal's Bruno Fernandes with his arm around teammate Raphael Guerreiro. EPA

Portugal players warming up at training. EPA

Portugal's Cristiano Ronaldo and Nelson Semedo. AFP

Portugal goalkeeper Rui Patricio. EPA

Portugal attacker Cristiano Ronaldo. EPA

Front to back: Cristiano Ronaldo, Nelson Semedo and Pepe. AFP

Portugal midfielder Bruno Fernandes. AFP

Portugal's Cristiano Ronaldo gives a teammate a head rub. AFP

Portugal's Cristiano Ronaldo at training. AFP

Portugal manager Fernando Santos watches his players stretch at training. EPA

Portugal's Cristiano Ronaldo. AFP

Cristiano Ronaldo warms-up with teammates at training. AFP

Portugal's Joao Cancelo. AFP

Portugal manager Fernando Santos. AFP

Cristiano Ronaldo was back on the training pitch on Tuesday preparing for Portugal's World Cup qualifier against the Republic of Ireland, hours after it was announced he had rejoined Manchester United.

The 36-year-old sealed a €15 million ($17.7m) move to England from Italian side Juventus after a whirlwind few days of negotiations that saw him sign a two-year contract with an option for a further season.

Ronaldo left the club first time round for Real Madrid in 2009 in a then world-record €94 million switch after a hugely successful spell with the Premier League club.

He moved to Manchester from Portuguese side Sporting Lisbon in 2003 and would go on to score 118 goals in 292 games, winning his first Ballon d'Or and Champions League title, as well as three Premier League titles, one FA Cup and two League Cups.

“This is absolutely 100 per cent the stuff that dreams are made of,” Ronaldo posted on Instagram.

“Everyone who knows me, knows about my never ending love for Manchester United. The years I spent in this club were absolutely amazing and the path we've made together is written in gold letters in the history of this great and amazing institution.

“I can't even start to explain my feelings right now … It's like a dream come true.”

Before potentially making his second United debut against Newcastle at Old Trafford on September 11, Ronaldo will be away on international duty for Portugal with two World Cup qualifiers — against Ireland and Azerbaijan — plus a friendly in Qatar on the schedule.