After temporarily losing interest in signing Benjamin Sesko from RB Leipzig, Arsenal has re-focused their efforts on bringing Gyokeres to the team.
Berta recently arrived in Lisbon to engage in face-to-face discussions with Sporting's directors and negotiate a suitable transfer fee.
It has been suggested that the transfer fee could reach up to £70 million, which would make Gyokeres one of the most expensive signings in Arsenal's history.
Notably, Gyokeres had already agreed to join Arsenal several weeks ago, with a contract worth £200,000 per week.
During his time with Sporting last season, Gyokeres demonstrated his impressive goal-scoring abilities, netting an impressive 54 goals.