After signing former New York Mets star Noah Syndergaard earlier in the week, the Los Angeles Angels may not be done just yet in revamping their starting pitching depth.

As noted by CBS Sports' Jim Bowden, the Angels are still looking to add at least one more pitcher in the coming weeks. As it stands, Syndergaard is the lone pitcher on the Angels roster who has had at least one career season with 150.0-plus innings pitched.

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Bowden further added that Cincinnati Reds starting pitcher Luis Castillo is among the players who the Angels are heavily interested in. The Angels are “trying to trade” for Castillo, who is just coming off of a campaign where he posted a 3.98 ERA and recorded 192 strikeouts over 33 starts.

Castillo has been in the trade rumor mill as of late regarding a possible departure from the Reds.

For one, MLB Network’s Jon Morosi noted earlier this month that the Seattle Mariners have checked in on a potential trade for the right-hander. The Mariners fell short of ending their playoff drought last season, although they made a move for left-hander Tyler Anderson ahead of last season's trade deadline.

The Athletic’s Ken Rosenthal did recently note that it is doubtful Castillo may be moved by the Reds in the offseason.

In the big picture, there are plenty of options for the Angels in free agency or the trade market to once again bolster their starting pitching depth. This has become an urgent need for them, especially as two-way star Shohei Ohtani was the only pitcher last season for the Angels to log at least 100.0-plus innings pitched.