Yes, you are right, so far, the most closed rumor to sign for Arsenal is Gyokeres after their successful signing of Zubimendi earlier. The agreement clause is around €65 million ($76.6m) based on the article that I read and this is so closed for done deal. Additionally, besides Gyokeres, Arsenal is also still working on negotiations with Real Madrid to sign Rodrygo closely, they also want to get that right winger to be on thier player lineup. Moreover, Real Madrid and Xabi have given the green light for Rodrygo to leave, as long as the fee is in line with their expectations. However, they are also facing challenges because on the other hand, rumors also say that PSG also wants him.
Reference: https://www.football365.com/news/arsenal-dream-target-rodrygo-man-city-liverpool-gyokeres-checks-in-bags It seems that Sporting are now ready to let Gyökeres join Arsenal for €70 million plus €10 million in add-ons. Earlier, they rejected Arsenal's offer of €65 million plus €15 million, but now it looks like they’re willing to agree to the deal. Arteta is pushing for Gyökeres to join Arsenal as soon as possible so he can complete pre-season preparations with the team. Viktor has already agreed on personal terms with Arsenal, and according to preliminary agreements, his contract is expected to run until the summer of 2030. If everything goes through, this would be a very strong addition to Arsenal’s attack.