Some Manchester United players were training at Carrington during the recent international break, while many were away with their national teams.
Starting with Leicester City, Manchester United have a tough run of fixtures coming up in Premier League and Champions League.
The former Real Madrid centre-back came off injured in the first half of France's Nations League final victory over Spain on Sunday.
Lingard feels the team has bonded well during the opening weeks of the season after the club made some exciting additions in the summer window.
Manchester United are coming to London on the back of a 2-1 loss to Young Boys in the Champions League match whereas West Ham beat Dinamo Zagreb 2-0 in the Europa League tie.
United have signed the likes of Sancho, Varane, and Ronaldo this season in order to help Solskjaer win his first trophy as the manager.
The goalkeeper had a big part to play in Bruno Fernandes' spectacular goal for Manchester United in the 4-1 win over Newcastle at the weekend.
With Manchester United prepared to take on Young Boys in their Champions League opener, Solskjaer spoke about why they reached earlier to Bern, Switzerland, among other things.
Manchester United bolstered their squad in style over the summer, landing Portuguese superstar Cristiano Ronaldo in a big-money deal.
The duo defended admirably at the heart of Manchester United’s defence as the Red Devils beat Wolves in the Premier League.