Mourinho aims to keep what he's got
Manchester United have already bought Holland winger Memphis Depay for £25million and are rumoured to be considering a £40m bid for Tottenham's Harry Kane.
Juventus midfielder Paul Pogba and Real Madrid's Gareth Bale, the subject of the world record transfer of £85m from Spurs, have also been linked with moves for astronomical fees this summer.
Chelsea did their business early last summer, with the key purchases of Diego Costa and Cesc Fabregas significantly aiding their title win with three matches to spare.
And Mourinho is in no rush to enter the bidding this summer.
"I expect to be busy walking from my towel in the sand to the water, swim a little bit and be back to the sun again. That's where I expect to be busy," said Mourinho, speaking ahead of Monday's game at West Brom.
"I'm in a different position to last season. Last season I was more than keen for my club to sell some players. At this moment I'm very happy to keep my players."
There will be some outgoings and incomings - "a little bit everywhere" - but Mourinho hopes goalkeeper Petr Cech will stay at Stamford Bridge despite being displaced as first choice by Thibaut Courtois.
Cech's agent, Viktor Kolar, has said the 32-year-old has been permitted to speak to other clubs, with Arsenal, Liverpool, Besiktas, Real Madrid and Paris St Germain reported to be interested in acquiring the goalkeeper.
"The base last year was to sell some to buy some. The base this season is to keep my squad," Mourinho added.
"I don't know that it's absolutely true what the agent is saying.
"Maybe it is, but the player has contract with Chelsea and Chelsea will have a very important say in the decision.
"I keep saying the same: I want my best players. Petr is one of my best players.
"I want my important players. Petr is one of my important players, so I would like him to stay and that's my position.
"Yes, I'm optimistic that he can be here next year."
Cech (calf) is a major doubt for Monday's match at The Hawthorns, when striker Diego Costa could return from his hamstring problem.
Defender Kurt Zouma (knee), Ramires (kidney) and his fellow midfielder Oscar (thigh) are all out for the season.
Young players like Ruben Loftus-Cheek and Isaiah Brown, once of West Brom's academy, are likely to feature alongside captain John Terry.
Mourinho wants to assist Terry's aim to play every minute of every game in the Premier League-winning season.
Terry is rejuvenated under his long-time mentor Mourinho after appearing to be marginalised under the Portuguese's predecessors.
The 34-year-old has played every minute of all 36 games as Chelsea won the Premier League with three matches to spare.
The Blues skipper, who hit out at Mourinho's immediate predecessor Rafael Benitez after Chelsea won the title earlier this month, has equalled his best goals haul for a season of eight and wants his ninth.
Branislav Ivanovic and Eden Hazard, the PFA and Football Writers' Association Player of the year, have also started every Premier League game this term, with Mourinho planning to select them against West Brom and Sunderland, too.
"If we can do that, we are going to do that. It's a fantastic achievement, especially in a country like England," Mourinho added.
Terry will lift the Premier League trophy for a fourth time after the concluding contest with Sunderland on May 24.
Andre Schurrle, now at Wolfsburg, Mohamed Salah, who is on loan at Fiorentina, Mark Schwarzer, now of Leicester, and Lewis Baker, who is on loan at MK Dons, have all been invited to the celebration.
"All of them that started the season with us, they were invited for the last match," Mourinho said.
"We are not sure they can (come), but at least they know that they belong to the title and that they are champions like us.
"Not all of them will get an official medal. We are going to buy medals, we are going to buy replicas of the cup."
The invite extends to Chelsea's end of season awards dinner on May 26, the same evening when the League Managers' Association will announce their manager of the year.
Mourinho - inexplicably to many given his achievements this term - is yet to win a manager of the month prize, but is in contention for the main award.
"In London it's not very difficult to be in two places at the same time. That's not a problem," he said.
"If the third trophy (after the Premier League and Player of the Year prize for Hazard) doesn't come, it doesn't come."