Wanderers are hoping to include Julio Cesar in the team against Inter Milan on Sunday after he passed his medical on Friday.
The Brazilian centre-back, once of Real Madrid, will play in the Reebok friendly against the Italian giants provided his international clearance comes through in time.
Cesar, who has ended his contract with the Spanish club Valladolid, will become Sam Allardyce's seventh signing of the summer and the fourth addition to Wanderers' defensive ranks, following the earlier capture of Tunisian, Radhi Jaidi, and the arrival this week of his former Bernabeu team-mate, the veteran Spaniard, Fernando Hierro, and the Israeli starlet, Tal Ben Haim.
Wanderers are still waiting for Hierro's international clearance but Ben Haim's documentation came through, making him available for the Inter game.
Recommended by the respected CDS Soccer.com website as a "top class player and complete defender", Cesar has gained a wealth of experience for a 25-year-old.
Born in San Luis, Brazil, he came to Europe in 1997 and played for Valladolid before John Toshack took him to Real Madrid, as understudy and a potential replacement for Hierro.
He played in La Liga and the Champions League, but a lack of first-team opportunities led to him being loaned out, first to AC Milan, then Real Sociedad, Benfica and Austria Vienna before being transferred back to Valladolid last summer.
Impressed by his performances on trial and knowing he had negotiated a settlement on his contract with Valladolid, Wanderers had no hesitation in offering the Brazilian a one-year Reebok deal.
Allardyce, who is still aiming to sign another defender, a goalkeeper and a striker, said of Cesar: "He is a talented player and will be an excellent signing. He has a fantastic physique and should settle quickly into the squad.
"For such a young man, he has had experience playing top level football in four European countries. Julio sees the Premiership as the ideal springboard to continue his rapid growth as a top class player."
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