49ers depth chart 2015: What's next at wide receiver heading into the 2015 NFL Draft?

The bulk of NFL free agency has wrapped up, with Michael Crabtree likely the last significant signing between now and the 2015 NFL Draft. The draft takes place April 30 to May 2, and is followed by the May 12 deadline for players to still be included in the comp pick formula. After May 12, we will see some more signings across the league, primarily among the older veterans in the league.

The San Francisco 49ers made a significant change to their wide receiver depth chart this offseason. The team signed Torrey Smith, and saw Michael Crabtree depart for the Oakland Raiders. As the 49ers wrap up the second week of the offseason workout program, here are the team's wide receivers.

Wide receivers: Anquan Boldin, Torrey Smith, Quinton Patton, Bruce Ellington, Jerome Simpson, Chuck Jacobs, Trindon Holliday, Lance Lewis

Wide receiver is a position that has frequently appeared in 49ers mock drafts. The team is hosting DeVante Parker for a visit, and has had interactions with Amari Cooper, Kevin White, Dorial Green-Beckham and others. The 49ers have a great 1-2 combination in Boldin and Smith, but they are left with question marks the rest of the way down the depth chart.

It is entirely possible Patton and/or Ellington could emerge this season. Ellington showed some play-making skills in his receiver opportunities last year. Patton has shown a couple instances of play-making as well, but last season's passing attack was inconsistent in a variety of ways.

The 49ers will add at least one or two more wide receivers to the mix, but where in the draft exactly remains to be seen. Do they make a move up for one of the big names? It is a deep draft at the wide receiver position, so they could very well let things come to them a bit more.

How would you feel if the 49ers did not spend a first or second round pick on a wide receiver? Say they ended up with a late day two or early day three wide receiver? Torrey Smith and Anquan Boldin bring a lot to the table, but the question then becomes how much the 49ers can get from Patton and Ellington, and really how much they need to get from their reserves.

Here is list of the top 30 wide receivers via Poldarn's compilation big board:

1. Amari Cooper, Alabama
2. Kevin White, West Virginia
3. DeVante Parker, Louisville
4. Jaelen Strong, Arizona State
5. Dorial Green-Beckham, Oklahoma
6. Devin Funchess, Michigan
7. Breshad Perriman, UCF
8. Nelson Agholor, USC
9. Devin Smith, Ohio State
10. Sammie Coates, Auburn
11. Tyler Lockett, Kansas State
12. Rashad Greene, Florida State
13. Justin Hardy, East Carolina
14. Tre McBride, William & Mary
15. Jamison Crowder, Duke
16. Tony Lippett, Michigan State
17. Ty Montgomery, Stanford
18. Antwan Goodley, Baylor
19. Stefon Diggs, Maryland
20. Josh Harper, Fresno State
21. Dezmin Lewis, Central Arkansas
22. Vince Mayle, Washington State
23. Kenny Bell, Nebraska
24. Chris Conley, Georgia
25. Titus Davis, Central Michigan
26. Dres Anderson, Utah
27. Darren Waller, Georgia Tech
28. DeAndre Smelter, Georgia Tech
29. Austin Hill, Arizona
30. Deontay Greenberry, Houston