According to recent reports, Arsenal are in active talks with Valencia to bring Mosquera to the Emirates Stadium. This move would be a significant addition to the team's defensive lineup, as Mosquera is considered one of the top targets for the center back position.

Mosquera, who is just 20 years old, has already made 90 appearances for Valencia, including 41 last season. He has also gained valuable experience playing for the Spain Under-21 squad.

The Arsenal team is in need of additional defense, as their first-choice pair, Gabriel and William Saliba, made over 90 appearances combined last season. Arteta and Berta believe that Mosquera could provide the necessary support and help to reduce the workload for the existing defensive pair.

The good news for Arsenal fans is that Mosquera is considered a bargain, with a transfer fee estimated to be as low as £17 million. This could be one of the smartest moves of the summer, providing the team with a talented young defender at a relatively low cost.

It remains to be seen whether the negotiations will be successful, but Arteta and Berta are certainly showing no signs of slowing down in their pursuit of strengthening the team's defense.