Viktor Gyokeres is expected in London on Friday after Arsenal agreed a £63.8m deal with Sporting for the striker.
The Gunners will pay the Portuguese club a £55.1m (€63.5m) guaranteed fee, plus £8.7m (€10m) in add-ons.
Sky Sports News understands Gyokeres is due in London on Friday to sort final contractual details with Arsenal.
It is thought that the plan is then for him to join up with the squad in Singapore and complete his transfer from Sporting.
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Bringing in a striker has been a primary focus for Arsenal in this transfer window – they have explored conditions for a number of players, including RB Leipzig’s Benjamin Sesko.
Sky Sports News reported in June that Gyokeres was a Manchester United target after they made an initial approach for him through intermediaries.
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Highlights of Arsenal’s pre-season win against AC Milan in Singapore.
Last month, Sporting president Frederico Varandas revealed Gyokeres would not be allowed to leave for less than £59m (€70m) this summer after disputing the existence of a ‘gentleman’s agreement’ with the Swede’s agent that would allow him to leave for a fixed fee of £50.8m (€60m), plus £8.4m (€10m) in add ons.
After joining Sporting from Coventry City for around £20m in 2023, Gyokeres has scored an incredible 97 goals in just 102 matches during his two seasons in the Portuguese capital.
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Gyokeres netted 54 goals in only 52 games in all competitions last campaign, including a hat-trick against Manchester City in the Champions League, as he helped Sporting win the league and the Portuguese Cup.
A move to Arsenal sees Gyokeres return to English football, having joined Brighton & Hove Albion in January 2018, before moving to Coventry after loan spells at St Pauli and Swansea City.
Gyokeres scored 43 goals for Coventry in his two and a half seasons with the Championship side.
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Analysis: Is Gyokeres Arsenal’s missing piece or a gamble?

For years, the football world called for Arsenal to sign a striker and the Gunners have finally responded. Viktor Gyokeres is on his way to the Emirates.
The move is set to be a standout one for the Premier League – no player in Europe’s top eight divisions matched Gyokeres’ 39 league goals for Sporting last season and it could herald the arrival of another elite goalscorer for the division.
But it is even more significant for Arsenal, given their spending under Mikel Arteta.
Read more on what Viktor Gyokeres can bring to Arsenal here…
Gyokeres part of busy summer at Arsenal

New Arsenal signing Martin Zubimendi poses for a photo at the Emirates Stadium
Developments around Gyokeres come amid a busy summer of incomings at Arsenal.
They announced the signing of midfielder Martin Zubimendi from Real Sociedad in a £51m deal and another central midfielder, Christian Norgaard, arrived from Brentford for £15m.
Spaniard Kepa Arrizabalaga was signed for £5m from Chelsea, followed by a £52m deal for Noni Madueke.
And Arsenal are set to confirm the signing of Valencia defender Cristhian Mosquera in an initial £13m deal.
Sky Sports to show 215 live Premier League games from next season

From next season, Sky Sports’ Premier League coverage will increase from 128 matches to at least 215 games exclusively live.
And 80 per cent of all televised Premier League games next season are on Sky Sports.