Eriksen suffered a cardiac arrest on the pitch while playing for Denmark at last year's Euro 2020 and had to have an implantable cardioverter defibrillator (ICD) fitted as a result.
Frank Lampard was appointed as Everton's seventh manager in six years on a two-and-a-half year contract on Monday.
Bruno Guimaraes, 24, is head coach Eddie Howe's third signing of the transfer window, following the arrivals of England international Kieran Trippier and New Zealand international Chris Wood.
The 25-year-old Diaz signed a contract till 2027 for a reported fee of £37.5 million ($50 million), with a further £12.5 million in potential bonuses.
Liverpool finally bolstered their defensive options by signing Schalke's Ozan Kabak and Preston's Ben Davies before the Premier League transfer window slammed shut on Monday.
Arsenal have been linked with a loan move for Real Madrid playmaker Isco next month, but first of all technical director Edu will attempt to raise funds by moving on those who are surplus to requirements.
The 27-year-old Dane, who joined Spurs in 2013 and moved to Inter Milan last month, had said after Tottenham’s defeat by Liverpool in last season’s Champions League final that he wanted to try something new.
The 25-year-old has signed a five-and-a-half year contract with an option to extend for a further year.
Manchester United have agreed a deal to sign Portuguese international midfielder Bruno Fernandes from Sporting Lisbon, the Premier League club announced on Wednesday.
The 26-year-old joins from Brazilian side Flamengo, where he helped the Rio de Janeiro-based team win the Brazilian title and the Copa Libertadores last year.
Christian Eriksen, 27, has signed a contract until 2024 with the Italian giants after the clubs reached an agreement for a reported transfer fee of €20 million (£17 million, $22 million).
Manchester United are reportedly in talks over a deal for Sporting Lisbon midfielder Bruno Fernandes, who could cost as much as £70 million, though Solskjaer offered no update on that or any other moves in the January market.
The 24-year-old forward - who impressed Liverpool in their two Champions League group matches this season with Red Bull Salzburg - is believed to have signed a four-and-a-half-year contract.
The January transfer window shut in Europe's leading leagues, with Newcastle United's signing of Miguel Almiron the biggest deal to go through on a deadline day almost devoid of activity at the Premier League's biggest clubs.
Gonzalo Higuain sealed a loan move until the end of the season on Wednesday from parent club Juventus having spent a troubled first half of the campaign on loan at AC Milan.
The Chile international said he has high expectations for himself and that he has struggled to adapt after the 'abrupt' January transfer window move.
The Premier League clubs’ purchasing power was evident again in January but unusually the big money went on defenders.
British newspapers reported that City paid a club-record £57 million for the 23-year-old Laporte who has signed a contract until 2023.
