ALEXANDER Isak was finally back on the training pitch on Tuesday following his 125 million pounds ($168.86 million) move to Liverpool that made him the most expensive player in Premier League history on Monday.

Sent to train on his own by former club Newcastle United while the uncertainty over his move to Liverpool rumbled on, Isak (pictured) smiled and laughed as he warmed up with his Sweden teammates in Stockholm ahead of their World Cup qualifiers against Slovenia and Kosovo.

There were no signs of fatigue on Tuesday morning, despite it being well past midnight when the white car containing the 25-year-old swept quietly into the parking garage of the team's Stockholm hotel, bringing to an end a long day and an even longer transfer saga.

"That's what you want," fellow striker Viktor Gyokeres, who went through a transfer tug-of-war of his own during the summer, told reporters when asked if he was relieved that the whole thing had been resolved and the transfer window had closed.

"It's not really something you want to be stuck in forever, (playing) is what we all live for, and we're looking forward to the games we have now."

Both Isak and Gyokeres, who moved from Sporting Lisbon to Arsenal in a deal worth up to a reported 63 million pounds, did their best to get their former clubs to grant their wishes for a move, provoking disapproval from their former fans and accusations that players have too much power.

However, Gyokeres rejected that notion.

"I think the clubs have the most power," he said. "When it's a player that's not wanted at a club, it's the total opposite. He doesn't have any power, and the club can do whatever they want."

Sweden now have the luxury of two of the world's best strikers as they start their World Cup qualifying campaign away to Slovenia on Friday.

Though he declined to elaborate on how Isak would be used, Sweden coach Jon Dahl Tomasson has said he could be a "game-changer".

Whatever happens, Gyokeres is looking forward to teaming up with Liverpool's new number nine again.

"We've played a few games together and felt very good in those games. He's scored, I've scored and we've assisted each other, so I think it's good to keep going on that path."

Meanwhile, Alexander Isak expressed his gratitude to Newcastle United and the club's supporters on Tuesday after his British-record transfer to Liverpool, despite a trail of criticism and a frosty farewell from St James' Park.

Newcastle fans were left with a bitter taste on Monday as the English champions secured the 25-year-old for 125 million pounds ($168.86 million) after the Sweden striker's standoff with the club ended with burned bridges and frayed loyalties.

"I want to express my gratitude to my teammates, the staff, and above all, the city of Newcastle and all the amazing supporters for the three unforgettable years we shared together," Isak wrote on Instagram with comments on the post turned off.

"Together, we have written history and brought the club to the place where it truly belongs. It has been an honour to be part of the journey from reaching the Champions League to winning the first trophy in over 70 years. Forever grateful. Thank you, Newcastle."

Underscoring the chill over a once-celebrated relationship was Newcastle's terse 37-word statement 18 hours before his Instagram post, which confirmed the British record sale but omitted any mention of his goals or the League Cup trophy he helped them win last season.

The Newcastle United Supporters' Club wrote on X on Monday, "Whatever Alexander Isak goes on to achieve in his career, he will always be remembered for the way he has acted this summer. His behaviour has permanently destroyed his reputation in football."

Isak will feature for Sweden in their World Cup qualifiers away at Slovenia on Friday and Kosovo three days later, his first outings of the season after missing all of Newcastle's pre-season and league fixtures. ($1 = 0.7402 pounds)