The summer transfer window is set to be a busy one for Brendan Rodgers and Celtic. The treble winners and current reigning Scottish Premier League champions are dominant domestically but it’s in Europe where showings and performances will have to improve.

So far they've brought in Jonny Hayes from Aberdeen and highly-rated 19-year-old midfielder Kundai Benyu from Ipswich Town, while midfield powerhouse Olivier Ntcham swapped Manchester for Glasgow.

Coupled with the fact vultures are circling the talented Kieran Tierney, the prolific Moussa Dembélé and the reinvigorated Stuart Armstrong, it could be quite the revolving door at Parkhead over the summer months.

The club will no doubt want to keep their best players but cashing in on one could provide them the funds to strengthen their entire squad.

With that in mind, we’ve taken a look at the top five Celtic rumours using our Football Whispers Index, which scores the validity of transfer rumours out of five, to see who could be joining the Rodgers revolution.

Charly Musonda – Chelsea – 2.8

Earlier this month the Belgian playmaker emerged as a top transfer target for Celtic. Reports suggested a fee of £5million would be enough to take the 20-year-old north of the border but a deal couldn't be struck.

Celtic weren't prepared to part with such a fee in one hit and negotiations ground to a halt.

He's since been given a squad number at Stamford Bridge, taking compatriot Eden Hazard's old 17 shirt.

That implies he will be part of Antonio Conte's squad next season with the Italian having to manage an increase in games with the club back in the Champions League.

However, this doesn't mean a move is dead.

A financial windfall, such as selling Dembélé ,could see Scottish champions stump up the cash to bring the one-time Real Betis loanee to the club.

Even with the arrival of Hayes the club still need attacking reinforcements and, as outlined in our profile of Musonda, he has the potential to be comfortably the best player in the league.

Patrick Roberts – Manchester City – 2.4

Roberts' loan spell at Parkhead come to an end this summer but the Bhoys are plotting a move to bring him back to the club permanently.

He's currently back with Pep Guardiola's side involved with pre-season training but reports suggest the former Barcelona coach is prepared to let him leave and Celtic are determined to be at the front of the queue.

Reports emerged which implied the Hoops had bid £7million for the former Fulham winger but the bid was rejected.  It's since come to light that 12 clubs are vying for his signature, including Porto and Nice.

The new Celtic away shirt is available with Roberts' name and number included. Wishful thinking on the club's part or simply an admin error?

Ryan Kent – Liverpool – 1.6

Various reports have suggested Rodgers is set to raid his former club Liverpool to bring Kent to Scotland.

The 20-year-old flourished while on loan at Barnsley last season and has a host of suitors all fighting for his signature this summer.

Kent would provide the flair, creativity and energy on the wing which the club could miss on the flanks after the departure of Roberts.

Stylistically, he offers a halfway house between the more refined Roberts and the hustle and bustle of Jonny Hayes.

You can read a scout report looking at Kent's suitability for Celtic here.

It is unknown whether Jürgen Klopp would allow the youngster out on loan again.

The Reds could have Champions League football next season meaning they need a deeper squad and, aside from Sadio Mané and Mohamed Salah, they aren't blessed with pace.

He impressed as a second-half substitute in the 4-0 win over Tranmere Rovers but Rodgers could use his existing relationship with the club to land the in demand attacker.

John McGinn – Hibernian – 1.5

In May reports emerged suggesting Rodgers was keen on Hibs man McGinn.

The 22-year-old Glasgow-born midfielder has three caps for Scotland and his form with the capital club has alerted a number of clubs.

Ipswich had a £1.2million bid turned down earlier in the summer and are set to return with an improved offer.

Undeterred by interest from elsewhere, Rodgers wants to push on and land the midfielder who he views as the potential heir to 32-year-old Scott Brown at the heart of Celtic's midfield.

The Bhoys are by no means short of options in midfield but the manager is a known admirer of the Hibs general and is said to be prepared to make room for him to stop him moving to England.

Joshua Brenet – PSV – 1.1

Back in June Celtic were named as one of six clubs to be interested in PSV defender Brenet. The 23-year-old is a man in demand with Koln, Eintracht Frankfurt, Watford and Fiorentina all interested in the right-back.

De Telegraaf claimed the Dutch international defender was available for a fee of £3.5million and would be prepared to leave the Eredivisie this summer.

Are Celtic really in a position to part with such an amount of a right-back when Mikael Lustig performed admirably there last season?

He could be a long-term replacement for the 30-year-old but the fee being mentioned means the deal is unlikely.

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