UPDATE: UEFA.com's German edition has also reported the transfer as complete.
Philippe Senderos had recently returned to the North London club from a loan spell at AC Milan, where he figured just infrequently.
The Swiss Football Federation announced on its official website on Sunday that Senderos, who has one year to run on his contract with Arsenal, had signed for Everton for an undisclosed fee.
It is understood that Senderos, who has been looking for regular first-team action ahead of the 2010 World Cup, will fill in for Manchester City-bound Joleon Lescott at Goodison Park.
Neither club have yet commented on this matter to date. The Swiss Football Federation has no details of the figure involved in the transfer or the duration of Senderos' contract with the Liverpool-based club.
Luís Mira, Goal.com