The deal (according to La Gazzetta Dello Sport) will take affect during the next Serie A season. The contract between Ziegler and Sampdoria was set to expire at the end of the current season.
Ziegler was the center of transfer rumors between Sampdoria and Lazio during the January (2011) transfer window. During that time, Ziegler opted to remain with Sampdoria.
Ziegler signed with Sampdoria in 2007. His record with the team (during the current Serie A season) is 29 games, one goal, one assist and 25 shots.
Reto Ziegler has also participated with the Swiss National Football Team in events such as the 2010 FIFA World Cup.
Ziegler came close to signing with the Russian club FC Zenit at one time, but it never materialized. It remains to be seen what will transpire.