Arsenal’s first major outgoing deal of the summer has now been confirmed, with Jakub Kiwior completing his permanent move to Porto after the Portuguese champions activated their purchase option.
The Poland international spent the season on loan at Porto and played a key role in their Primeira Liga-winning campaign, convincing the club to make the deal permanent.
Porto have now officially announced the agreement, ending Kiwior’s Arsenal chapter after a two-year spell in north London.
Porto confirm permanent Jakub Kiwior signing from Arsenal
In an official club statement, Porto confirmed they have exercised the agreed purchase clause in Kiwior’s loan contract.
The Portuguese club will pay a fixed €17 million (£14m), with a further €5 million (£4.2m) in potential performance-based bonuses. That could take the full package to around £19 million.
Porto also confirmed Arsenal will retain a future financial interest in the defender, securing a €2 million fixed amount in the event of any future transfer.
It shows Arsenal still see long-term value in the player’s trajectory.
Jakub Kiwior signs long-term Porto contract
As part of the permanent deal, Kiwior has signed a contract until June 2030, giving Porto strong control over his future.
The agreement includes a €70 million (£60m) release clause — a figure that reflects both his importance and his market growth over the past season.
| Transfer Detail | Jakub Kiwior |
|---|---|
| Initial Fee | €17m (£14m) |
| Add-ons | €5m (£4.2m) |
| Contract Length | Until June 2030 |
| Release Clause | €70m (£60m) |
source: FC Porto official statement – 7 May 2026
That release clause effectively protects Porto’s investment while positioning the defender as a high-value asset moving forward.
Why Kiwior chose to leave Arsenal
Kiwior has been clear that the decision to leave Arsenal was about football, not frustration.
Speaking to Polish broadcaster TVP Sport, the defender explained that Mikel Arteta initially wanted him to stay.
With Gabriel Magalhães and William Saliba firmly ahead of him in the defensive pecking order, Kiwior recognised his path to regular starts would remain limited.
Rather than accept a secondary role, he pushed for the move himself.
Based on Arsenal’s defensive structure this season, opportunities for rotation at centre-back have remained limited, making his decision understandable from a career perspective.
Porto success made the decision easier
The move has paid off. Kiwior became a regular starter and helped FC Porto secure the Primeira Liga title, significantly strengthening his standing.
Having followed Porto’s season closely, his consistency and adaptability in possession made him an important part of their defensive stability. That success ultimately removed any doubt about making the deal permanent.
Key Insights
- Porto have confirmed the permanent signing of Jakub Kiwior
- Arsenal receive €17m upfront, rising to €22m with bonuses
- Kiwior has signed until 2030 with a €70m release clause
- Arsenal retain a future financial interest in any sale
- The defender pushed for the move to secure regular football
What’s next for Kiwior and Arsenal?
Kiwior will now focus on building on his strong first season in Portugal, while Porto secure a defender entering his prime years.
For Arsenal, attention turns towards squad restructuring, with further exits and reinforcements expected as the summer window develops.
Kiwior may be the first confirmed move — but he is unlikely to be the last.
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