Portugal winger Nani has moved on loan from Valencia to Lazio in a busy day for the capital club.
Lazio appeared the most active of the top clubs in Italy on the final day of the transfer window, as it was also completing deals for Nani's teenage compatriots Pedro Neto and Bruno Jordao.
Lazio has the right to buy Nani on a permanent basis at the end of the season.
No financial details were given by the clubs, but reports in Italy say Lazio will pay Valencia $4 million for the inital loan and then $9.5 million if the move is made permanent. There could be a further $3.5 million in bonuses.
Nani won four Premier League titles and the Champions League during a seven-year stint at Manchester United, before rejoining first club Sporting Lisbon on a season-long loan in 2014.
He moved to Fenerbahce on a permanent basis in 2015 before transferring to Valencia the following year.
The 30-year-old has played more than 100 times for Portugal, winning the European Championship in 2016.
Neto and Jordao, who are 17 and 18 respectively, are currently undergoing medicals at Lazio and are expected to complete their moves from Braga later.
Lazio unexpectedly beat Juventus to win the Italian Super Cup, but then drew its opening league match against newly promoted Spal and needed a last-minute goal to win at Chievo Verona last weekend.
After signing 11 new players in the offseason, AC Milan needed to offload players with French striker M'Baye Niang going on loan to Torino.
Niang has previously had loan stints at Montpellier, Genoa and Watford during his five years at Milan.
Also, Fiorentina has signed forward Cyril Thereau from Udinese.
Thereau scored 12 goals last season and has already netted two in the opening two matches of this campaign.
The Associated Press contributed to this report.