Jordi Alba has encouraged Barcelona to sign Antoine Griezmann from Atletico Madrid ahead of the summer transfer window.
Van Gaal spent two seasons at Old Trafford and was sacked in May 2016 after guiding his side to an FA Cup triumph.
Antonio Valencia limped off after 66 minutes of Manchester United's 2-1 win over West Brom on Sunday after suffering what Jose Mourinho labelled as a "December injury".
Malcom indicated an interest in moving to Manchester United this summer, and he could still move with Mourinho plotting a winter move.
Mesut Ozil will enter the final six months of his Arsenal contract at the end of December and will be allowed to talk to clubs outside England.
Manchester United have been given the green light to pursue a £60m deal for Alex Sandro in the January transfer window, with Juventus said to be open to offers.
Antonio Valencia came off with a hamstring injury after 66 minutes during Manchester United's win over West Brom.
Lukaku and Lingard's first-half strikes sealed United's sixth win in their last seven matches against an indifferent West Brom.
The Red Devils had offered him an extension in the summer and have now rewarded his performance with a deal running on to 2020.
United are 14 points behind Manchester City heading into their clash against West Brom at the Hawthorns.
Pardew says he prefers Mourinho to Guardiola due to the Red Devils boss's knack for winning trophies.
Chelsea's David Luiz is set to leave the club in the January transfer window after his fallout with Antonio Conte as Juventus and Manchester United are said to be interested.
Arsenal and Manchester City had registered their interest in the defender during the summer.
Arsene Wenger is confident Mesut Ozil will sign a new deal after the Arsenal ace scored a brilliant goal to give the Gunners a 1-0 victory over Newcastle.
Henrikh Mkhitaryan has been left out of United's 18-man squad for seven of their last eight matches and is out of favour at the club.
Arsene Wenger saw his Arsenal suffer a 3-1 defeat against Manchester United, despite dominating the majority of the game at home.
Mateu Alemany has confirmed a decision whether Andreas Pereira will be allowed to continue at Valencia after January will be taken by the player and Manchester United United.
Manchester United's Henrikh Mkhitaryan has not made it to the squad in seven out of the last eight games played in all competitions.
Jose Mourinho has claimed that Manchester United are open to making signings in January despite not being a fan of the winger market.
West Brom look set to beat Premier League rivals Liverpool to the permanent signing of Al Ahly loanee Ahmed Hegazi in January.
The former Sweden captain returned to action in November after missing seven months with a serious knee injury
Manchester United centre-back Eric Bailly is set to be on the sidelines for around two or three months due to an ankle injury.