Lopez joined Wednesday on loan from Celta Vigo in the summer transfer window, and the attacking midfielder boasts experience of playing in the Spanish top-flight.
That is the calibre of player Carvalhal intends to bring to Hillsborough on a more regular basis, with the Championship outfit showing plenty of ambition under new ownership.
“Alex is not a kid. He is an experienced player and a team worker," Carvalhal explained. "He is here to help the club and it is these kind of players that we need for the future of the club.”
Wednesday have been funded by their new chairman Dejphon Chansiri, and their financial strength was highlighted during the recent transfer window.
The Owls brought in a host of new players and now boast one of the biggest squads in the Championship, with Carvalhal using a rotation policy to try and keep everyone in his squad involved.
Wednesday have depth in every position, and the strength of their squad is starting to shine through, with their results steadily improving.
The Yorkshire outfit have won their last three matches in a row, including a League Cup triumph over Premier League side Newcastle United, and now sit in 11th position in the second tier table.