In addition to the 9.5 million euros, the Portuguese global will also earn 4,000 euros for every point earned by the Black Eagles, with him playing.
Besiktas president Fikret Orman said that the Portugal worldwide would add leadership to the club's backline as they aim to retain the Super Lig crown they won last season.
With Turkey's only automatic Champions League berth in their possession, Beşiktaş hope for drastic improvement on their group-stage exit last time round.
He takes a wealth of experience with him over to Istanbul having lifted La Liga and the Champions League three times each.
Equiniti Group PLC (LON:EQN) Receives "Buy" Rating from Liberum Capital
Shares for $155,353 were sold by Lawrence Taylor W. $71,000 worth of stock was sold by Jimenez Frank R on Thursday, January 26. Three research analysts have rated the stock with a hold rating and five have issued a buy rating to the company.
China reminds India of 1962 defeat in another stern warning
These rogue manoeuvres were last time visible in 2008, when it razed some makeshift Indian bunkers in the area. This is also the first time that the Indians have gone in support of Bhutanese against the Chinese.
Oil prices jump in world markets
Oil prices rose for an eighth day Monday, in the longest winning streak in more than five years. Domestic crude oil production fell 100,000 barrels per day to 9.25 million barrels per day.
It was also during his time at Real that he won the Euro 2016 with Portugal.
At Besiktas, Pepe will join forces with his Portugal teammate, the winger Ricardo Quaresma, who has played for the Istanbul side from 2015 after an earlier 2010-2012 stint and is a big favourite with fans.
The 34-year-old has an experience of playing almost 350 games for the Spanish side after transferring from Porto in 2007, winning three La Liga titles and three Champions Leagues.
The Portugal worldwide had reportedly been set to move to either Inter or Paris Saint-Germain but both those moves now appear to have been scrapped in favour of a move to Istanbul.