Max Mosley has warned the Formula One Teams' Association that the newly-brokered peace deal in the sport could be jeopardised by continued antagonism.
FIA president Mosley confirmed on Wednesday that an agreement had been reached between the FIA and FOTA to prevent a breakaway series from being set up.
As part of the agreement, Mosley also agreed not to stand for re-election in October as the head of the FIA.
However, Mosley has been angered by subsequent claims from FOTA in which his style of leadership was heavily criticised.
In football, Manchester United want to sign Karim Benzema this summer, according to a claim made by the agent of the Lyon and France star.
The 21-year-old striker has been strongly linked with a move to Old Trafford to fill the void created by Cristiano Ronaldo's world record £80million transfer to Real Madrid.
However, United's hopes of signing Franck Ribery have been dealt a further blow after Bayern Munich labelled the France star 'irreplaceable'.
Real Madrid remain the favourites among the online bookmakers to sign the France international.
Blackburn Rovers have completed the permanent signing of Gael Givet from Olympique Marseille.
The France international has joined on a four-year contract for an undisclosed fee following a successful six-month loan spell at Ewood Park last season.
Meanwhile, new £5million defender Roger Johnson insists will not be fazed by his price tag when he plays in the Premier League for Birmingham City.
The 26-year-old penned a three-year contract with the newly-promoted Blues on Thursday and is relishing the prospect of playing in the top-flight.
Stoke City chairman Peter Coates has denied reports that his club are close to signing striker Dean Ashton from West Ham United.
Coates claims the Potters are 'a million miles away' from actually agreeing a deal to sign a player who started his career at Stoke.
Meanwhile, Arsenal midfielder Cesc Fabregas has pledged his future to the Gunners after press reports suggested that he was growing tired of his club's failure to win silverware.
The 22-year-old, who has been with the north London club for six years, had reportedly voiced his anger at the Gunners' 'impotence' in the pursuit of trophies, but Fabregas insists that that does not mean he wants to move on.
In rugby union, British & Irish Lions scrum-half Mike Phillips has backed his team-mates to produce a performance to win the second Test against South Africa after a late rally in Saturday's first clash.
The Lions trailed 26-7 early in the second half of Saturday's first Test in Durban, before producing a stunning late fightback which almost produced one of the most remarkable results in the history of the famous tourists.
Despite eventually being beaten 26-21, Phillips is expecting more of the same this week, but with his side going one better.