Here is a look at how eight of them have fared so far.
Newcastle United midfielder Bruno Guimaraes scored a brilliant goal and won a penalty as his side beat Nottingham Forest 2-0 at home in the Premier League on Sunday to heap even more pressure on under-fire boss Ange Postecoglou.
Manager Eddie Howe said Newcastle United are still adapting to life without Alexander Isak following the striker's transfer to Liverpool and called for patience as his new-look attack struggles to click into gear.
Rashford was still looking for his first Barcelona goals following his July loan move from Manchester United.
Matchday 1 of the Champions League group-stage resumes on Thursday with another round of high-profile clashes across Europe. Manchester City’s meeting with Napoli and Newcastle’s showdown against Barcelona headline the night, while elsewhere Sporting CP host Kazakhstan’s Kairat Almaty and Frankfurt face Galatasaray. Early kick-offs see Club Brugge welcome Monaco and Copenhagen take on Bayer Leverkusen
The Sweden striker is understood to have arrived at the club's training ground on Monday, with a protracted saga nearing an end.
Premier League champions Liverpool have agreed a deal to sign Alexander Isak from Newcastle United for a British record transfer fee, media reports said Monday.
Liverpool needed a 100th minute winner from 16-year-old Rio Ngumoha to beat Newcastle 3-2, after blowing a two-goal lead against 10 men, in a Premier League thriller on Monday.
Newcastle great Alan Shearer has accused wantaway striker Alexander Isak of pouring "flames on the fire" of his row with the Magpies by accusing the northeast club of breaking promises.
Premier League champions Liverpool have agreed a deal to sign Alexander Isak from Newcastle United for a British record transfer fee, media reports said Monday.
Liverpool needed a 100th minute winner from 16-year-old Rio Ngumoha to beat Newcastle 3-2, after blowing a two-goal lead against 10 men, in a Premier League thriller on Monday.
Newcastle great Alan Shearer has accused wantaway striker Alexander Isak of pouring "flames on the fire" of his row with the Magpies by accusing the northeast club of breaking promises.
Newcastle got a worrying glimpse of life without Alexander Isak as they were held to a 0-0 draw in their Premier League opener at Aston Villa despite Ezri Konsa's dismissal.
Newcastle United manager Eddie Howe has admitted the cold war with wantaway striker Alexander Isak is far from ideal as his side prepare to start the Premier League season without their prolific goalscorer.
Alexander Isak's future at Newcastle hangs in the balance after the Swedish striker was reportedly told to train apart from the rest of the squad on Wednesday.
Premier League sides Manchester United and Newcastle have both placed competing bids for in-demand RB Leipzig striker Benjamin Sesko, German tabloid Bild reported Tuesday.
Departing Tottenham captain Son Heung-min was in tears and his team-mates threw him in the air on an emotional evening in his native South Korea on Sunday.
Newcastle manager Eddie Howe insisted Saturday that Alexander Isak is still a Newcastle player despite speculation around a move to either Premier League champions Liverpool or Al Hilal in Saudi Arabia.
Liverpool have agreed to sign Eintracht Frankfurt striker Hugo Ekitike in a deal worth an initial £69 million, according to a BBC report.
