Arsenal have completed a double swoop after signing Real Madrid midfielder Dani Ceballos on loan and defender William Saliba on a long-term deal.
The 22-year-old Spain international is highly-regarded at the Bernabeu and made 23 La Liga appearances throughout the 2018/19 campaign.
But Ceballos, who has six senior caps and also helped Spain's Under-21s to Euro 2019 success this summer, will now spend a year in north London after agreeing to a temporary switch to the Emirates Stadium.
The move had been expected but Arsenal head coach Unai Emery threw a little doubt on the deal after Real's Marco Asensio suffered a serious knee injury in a friendly win over the Gunners earlier in the week.
"We're excited to see Dani join us," Emery said on the announcement of the deal.
"He is a talented player with big technical ability, creativity and precision."
Ceballos tweeted soon after the announcement: "The decision has been made. This season I will be a gunner! I am anxious to start. Hello Arsenal. Here I am."
The former Sevilla and Real Betis youngster will wear the number eight shirt during his time at Arsenal and could feature in Sunday's Emirates Cup meeting with Lyon.
Saliba signs for Gunners
Saliba, 18, has been a long-term target for Arsenal - who beat off reported late interest from rivals Tottenham to capture the promising France youth international for a reported fee of £27 million from St Etienne.
Asked why he had opted for the red side of the north London divide, Saliba said: "Well, the history, the badge.
"Since I was little, I've been watching Arsenal play in the Champions League and so on, and there are a lot of French players who have come through here. So that really helped me to make my mind up."
The pair join Gabriel Martinelli in signing for the Europa League finalists this summer, the 18-year-old striker having joined from Ituano earlier in July.
18-year-old defender Saliba will spend next season on loan at the Ligue 1 club before linking up with the Gunners next summer.