Mauro Icardi's Inter saga could be at an end after Paris Saint-Germain made the headline-grabbing move of transfer deadline day.
Frozen out by Nerazzurri boss Antonio Conte, Argentina striker Icardi was facing a bleak few months until PSG came in and managed to complete an initial loan move.
PSG reportedly have an option to buy the 26-year-old for €70million, while the Ligue 1 champions also signed three-times Champions League winner Keylor Navas from Real Madrid in a deal that saw another goalkeeper, Alphonse Areola, move in the other direction on loan.
Serie A was a hive of activity on Monday, while plenty of Premier League players took the opportunity to move elsewhere – the window for incomings having closed in England's top flight last month.
Roman holiday for Mkhitaryan as Fiorentina aim for renaissance
Roma completed loan moves for Arsenal playmaker Henrikh Mkhitaryan and Atletico Madrid striker Nikola Kalinic, but there was a youthful edge to Fiorentina's late spree.
Wantaway Liverpool teenager Bobby Duncan will now ply his trade at the Stadio Artemio Franchi alongside Algeria winger Rachid Ghezzal – a loan signing from Leicester City.
The Viola also paid Fluminense in the region of €14m for Pedro, another player to replenish Vincenzo Montella's squad after Giovanni Simeone joined Cagliari on loan with an obligation to buy over the weekend.
Simone Verdi has joined Torino in similar fashion, ending an unhappy spell at Napoli – where free transfer Fernando Llorente bolsters Carlo Ancelotti's options at centre forward.
Napoli are joined in the Champions League by Atalanta this season and Simon Kjaer will be on hand to bolster their defence following a loan from Sevilla, although Martin Skrtel's swiftly terminated contract preceded him leaving Bergamo for a one-year deal with Istanbul Basaksehir.
Matteo Darmian was the latest member of Manchester United's defensive surplus to switch to Serie A, the Italy international joining Parma on a four-year deal after Chris Smalling was loaned to Roma. Cameron Borthwick-Jackson made the considerably shorter trip to League One side Tranmere Rovers.
The road from Watford to Udinese is incredibly well travelled and striker Stefano Okaka is back after a loan at the Stadio Friuli last season.
Italian flavour to Bundesliga business
AC Milan secured Croatia winger Ante Rebic on a two-year loan from Eintracht Frankfurt, for whom Andre Silva will seek to reignite his career and serve as a suitable replacement for Luka Jovic over the same period.
Bundesliga pacesetters RB Leipzig also have a talented attacker seeking a kickstart after Patrik Schick joined on an initial loan from Roma.
Vincenzo Grifo returned to Freiburg on a four-year deal from Hoffenheim, who also loaned Leonardo Bittencourt to Werder Bremen.
Marius Wolf left Borussia Dortmund for Hertha Berlin on a season-long loan and BVB's rivals Schalke sold Ukraine winger Yevhen Konoplyanka to Shakhtar Donetsk.
Rafinha on the move again as Hernandez and Bono conclude Sevilla's transfer frenzy
Had events panned out differently, this might have been the day Barcelona triumphantly welcomed Neymar back to Camp Nou.
As it was, a Brazilian left – Rafinha moving to Celta Vigo on loan after signing a contract extension with his parent club.
Barca have also agreed to sign 16-year-old midfielder Pedri from Las Palmas, who welcome back club stalwart Jonathan Viera on loan from Beijing Guoan for their Segunda promotion push.
Mexico striker Javier Hernandez and Morocco goalkeeper Bono were arrivals 12 and 13 of the window at Sevilla.
Maxime Gonalons was a loanee at the Ramon Sanchez Pizjuan last season and has joined Granada on a temporary basis from Roma.
Almeria were another hive of activity, with Nottingham Forest's Arvin Appiah and Joan Munoz concluding their incomings.
Real Sociedad signed Monaco's Spain Under-17 international Robert Navarro and loaned Kevin Rodriguez to Leganes.
Chelsea duo Baba Rahman and Kenedy were loaned to Real Mallorca and Getafe respectively.
Galatasaray's deadline-day delight
Radamel Falcao followed a rapturous reception following his arrival in Istanbul by signing a three-year contract with Galatasaray, who also secured Southampton midfielder Mario Lemina and Brighton and Hove Albion forward Florin Andone on loan.
Gala's rivals Fenerbahce were not to be outdone entirely as they brought in Brazilian midfielder Luiz Gustavo from Marseille on a four-year deal.
Sporting CP were already buoyed by keeping hold of the highly rated Bruno Fernandes, who will look to supply an attack reinforced by the loan arrivals of Jese from PSG and Yannick Bolasie from Everton.
Royal Antwerp snapped up Steven Defour after the playmaker's release by Burnley and also added Wesley Hoedt on a season-long loan from Southampton.
In Scotland, Celtic signed Kilmarnock left-back Greg Taylor, Manchester City teenager Jeremie Frimpong and Manchester United youngster Lee O'Connor – all on four-year deals. Rivals Rangers bought Ryan Kent from Liverpool for a fee that could reportedly rise to £7.5m.
Fellow Europa League contestants Qarabag secured former Chelsea goalkeeper Asmir Begovic on loan from Bournemouth.