The Raiders were on the verge of the playoffs this past season, but their passing defense took yet another step back. Besides the emergence of rookie Trayvon Mullen, the Silver and Black have plenty of question marks at cornerback as they move to Las Vegas.

There could be help available, though. ESPN's Adam Schefter reported Monday that the Detroit Lions have talked to multiple teams regarding a trade for their Pro Bowl cornerback, Darius Slay.

Lions have spoken with multiple teams about a potential trade for Pro Bowl CB Darius Slay, per sources. Any team that trades for Slay would have to compensate Detroit and Slay with a new deal. Other teams believe Slay will be traded this off-season, but Lions adamant on value. — Adam Schefter (@AdamSchefter) February 17, 2020

Between need, their slew of draft picks and available cap space, the Raiders could be a perfect fit for a trade with the Lions. Let's start with how Slay would fit in the defense.

Mullen is expected to man one side of the defensive backfield at cornerback, while the other side is a bit of a mystery. Daryl Worley is a free agent this offseason, but Nevin Lawson, Nick Nelson, Keisean Nixon and Isaiah Johnson all are options. None are Slay, though. Not even close.

Slay, 29, made his third straight Pro Bowl this last season. He also was a First Team All-Pro in 2017 when he led the NFL with eight interceptions and 26 passes defensed. Since 2014, Slay has recorded at least two interceptions and 13 passes defensed every season.

Per advanced analytics site Pro Football Focus, Slay has been the fifth-best cornerback in the game since 2014.

Darius Slay: 5th most valuable CB since 2014 pic.twitter.com/krUT7vzcra — PFF (@PFF) February 17, 2020

The Raiders also have the draft picks to get a deal done. They own two first-round picks -- Nos. 12 and 19 -- this April, as well as three in the third round, one in the fourth and one in the seventh. They have plenty of leverage to make a move.

Las Vegas also lands right in the middle of current available salary-cap space going into next season. According to Spotrac, the Raiders have slightly over $51.5 million in salary-cap space. Slay, who has a $13.4 million cap hit in 2020, wants a new contract as he's set to hit free agency after this upcoming season.

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He likely would cost more than a few extra pennies, but it's clear Slay still can be a solid corner in a division where everyone is chasing QB Patrick Mahomes and the Kansas City Chiefs.

The Raiders could target a cornerback early in the draft. That's not out of the question at all. If the Lions are taking calls on Slay like Schefter reported, Raiders general manager Mike Mayock would be wise to listen.