Jose Mourinho believes this summer's transfer market will be like "Wall Street collapsing" thanks to Manchester United and Manchester City pushing up transfer fees. United have already spent pounds 25?million on Memphis Depay and plan to sign up to four more players during a huge summer of business.
Having lost their Premier League title to Mourinho's Chelsea, City are also poised to do big business and have targeted the likes of Juventus midfielder Paul Pogba.
Mourinho, the Chelsea manager, confirmed he would be looking to do business, lining up the likes of Antoine Griezmann and Raphael Varane, but thinks transfer fees could be pushed up by his rivals. "The market is difficult," said Mourinho. "I can imagine that this summer will be like Wall Street collapsing. I can imagine that some clubs are coming with such determination to the market that they will take it to unexpected directions.
"But we are in a good situation. We have this stability in our squad. We don't need dramatic changes. We have to be loyal to our players. We have a good squad. What other clubs are going to do is not going to affect our direction. If others buy 10 players each that will not push us to do things we're not going to do. We are stable. Last season we had stability to analyse the needs to improve the team. This season we have stability to keep our squad, our team, but to give some extra motivation to the squad and a couple of extra options to improve."
Chelsea are long-time admirers of Atletico Madrid midfielder Koke, but the Spaniard said he will stay put.
Asked if he would be playing for Atletico next season, Koke replied: "Yes I will play here."
One player who could leave Chelsea is left-back Filipe Luis. Koke added: "Filipe Lui-s is more than a team-mate, he is a friend, so he would be welcome here [Atletico]."
Having already won the title, Mourinho has been considering how Chelsea will dish out the winners' medals and will make sure every member of his first-team squad over the course of the season is recognised - whether or not they have played.
Chelsea get 40 winners' medals from the Premier League and players who have made five appearances or more automatically get a medal. The rest can be dished out to whoever the club want and the Blues will make replicas to make sure there are enough to go around. Andre Schurrle, Mohamed Salah and Mark Schwarzer will all get medals, despite leaving Chelsea in January, and Mourinho said: "We are going to buy medals. We are going to buy replicas of the cup. For me the champions are those who played every minute like John Terry, but also people like Schwarzer who were not involved."
Chelsea face West Bromwich Albion on Monday night when Mourinho hopes striker Diego Costa will return from injury to play.
Meanwhile, Chelsea are part of a Premier League delegation who will ask the Football Association to investigate their own expert concussion panel. The club were criticised for the handling of a head injury after Oscar clashed with Arsenal goalkeeper David Ospina last month.
Chelsea defended their medical team and were staggered to see a member of the concussion panel, Dr Willie Stewart, publicly question their handling of the incident. Oscar's clash with Ospina occurred in the 16th minute, but the Brazilian was not substituted until half-time.
Premier League guidelines state any player who has suffered a concussion must undergo a six-day return-to-play protocol. Chelsea believe Dr Stewart may have contravened General Medical Council guidelines by judging the situation without any clinical facts.