The 26-year-old Czech Republic international could cost the Magpies a further £200,000 depending on appearances.
The last few days have been busy for Magpies boss Sam Allardyce, who is hoping to persuade Chelsea's Geremi to join Rozehnal on Tyneside.
A statement released to the City by the club's PLC on Friday night read: "Newcastle United plc are pleased to announce the finalisation of the transfer of David Rozehnal from Paris Saint-Germain for a transfer fee of ¿4.3million, with a further ¿0.3million payable contingent on future appearances of the player for Newcastle.
"A maximum of ¿0.25m (£170,000) may also be payable to PSG if the player registration is sold for more than ¿5.25million (£3.55million) in the future."
Meanwhile, Allardyce's ambitious trip to Spain looks set to end with Barcelona defender Edmilson becoming a Magpies player.
Allardyce, 52, headed for Catalonia on Thursday to meet the Brazilian World Cup winner after being given permission to open talks with the player by Barca president Joan Laporta.
Whatever Allardyce said seems to have struck the right note with the 30-year-old understood to have agreed to the move in principle to leave the Magpies delegation locked in negotiations with his club.
The manager, who travelled with Kenneth Shepherd, son of chairman Freddy, and European scout Paul Montgomery, also took the opportunity to inquire about Eidur Gudjohnsen's situation following the arrival of Thierry Henry at the Nou Camp earlier this week.
As Newcastle stepped up their efforts to strengthen their playing squad, there was also news on Allardyce's backroom staff as it emerged that England coach Steve Round is set to be unveiled as his number two.
But it is his move for Edmilson which has perhaps caused the biggest stir.
The former Lyon star, who operates either in central defence or as a holding midfield player, is currently recovering from knee surgery which is expected to sideline him for between four and six months.
However, Allardyce believes he will make a full recovery and could be available to play by October or November.
His pedigree, and the fact he is available for a nominal fee with only a year remaining on his contract, make him an attractive proposition for a club desperately short on experience at the back.
Newcastle's inquiry about Gudjohnsen represents more of a safety net as speculation continues over the futures of strikers Michael Owen and Obafemi Martins, who both have get-out clauses in their contracts.
Allardyce's assertion that the Owen situation is under control did not prevent a link with both Manchester clubs today, while Arsenal and Juventus have been credited with an interest in Nigeria international Martins.
The manager will welcome his squad - including £5.8million signing Joey Barton, but not Mark Viduka, who is on duty with Australia - back for the start of pre-season training on Monday desperate to resolve that situation, although acutely aware it would be taken out of his hands should potential suitors trigger the players' respective escape clauses.
However, he is at last making progress on the coaching front as he prepares to welcome 36-year-old Round to St James'.
Currently on Steve McClaren's England staff, former Middlesbrough coach Round is expected to combine his new position with his role in the international set-up.
He joined Boro from Derby, following McClaren to the Riverside Stadium and then to Soho Square.
Former boss Glenn Roeder recruited Nigel Pearson as his number two following Kevin Bond's departure, and it remains to be seen what the future holds for him.
Mike Ashley is now within touching distance of being able to de-list the club from the Stock Exchange after increasing his stake to 93.19%.
The initial offer period, which expired yesterday, has been extended until further notice as Ashley attempts to secure the 94.16% holding he requires to make a compulsory purchase of the remaining shares.
That figure represents the initial 41.6% holding he bought from the Hall family plus 90% of the remaining shares.
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