Cesar left a second spell with Real Vallodolid behind following the Spanish clubs relegation from La Liga and is said to be mulling other offers from clubs in Germany and Greece which rival Bolton for the signature of the ex-Real Madrid man.
The 25-year old who has also played in Austria and Portugal lined up for Bolton during recent friendlies against Dundee United and Sporting Lisbon and Wanderers boss Sam Allardyce is said to be happy with what he has seen thus far from the Samba star.
"My agent has several proposals in England, Germany and Greece. There are still several things I must consider, and I wouldn't expect to make a decision this week." Cesar told SKY Sports.com