until they've retired before starting a family. fifa have introduced similar rules. some transfer news for you. defender callum chambers hasjoined aston villa on a free transfer from arsenal. chambers joined arsenal in 2014 and has made just five appearences for the club this season. he joins steven gerrard's villa on a 3.5—year deal. barcelona are in talks with wolves to sign forward adama traore, which seems to end tottenham's chances of bringing him in. barca are offering to take their former player back on loan with the option to buy for around £29 million at the end of the season. spurs had a £15 million bid rejected earlier this month. premiership rugby club exeter chiefs will drop all references to native americans in their branding after it provoked significant criticism. they'll still be called the chiefs, but have changed their logo, which from this summer will use imagery from a celtic iron age tribe, the dumnonii, which encompassed a large area in the south west, including devon.