The Federal Public Defender appointed to represent Jason Ray Estep has moved for leave to withdraw and has filed a brief in accordance with Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967), and United States v. Flores, 632 F.3d 229 (5th Cir. 2011). Estep has filed a response, which raises claims of ineffective assistance of counsel and includes a request for the appointment of substitute counsel. The record is not sufficiently developed to allow us to make a fair evaluation of Estep’s claims of ineffective assistance of counsel; we therefore decline to consider the claims without prejudice to collateral review. See United States v. Isgar, 739 F.3d 829, 841 (5th Cir. 2014).

We have reviewed counsel’s brief and the relevant portions of the record reflected therein, as well as Estep’s response. We concur with counsel’s assessment that the appeal presents no nonfrivolous issue for appellate review. Accordingly, Estep’s motion for the appointment of substitute counsel is DENIED, the motion for leave to withdraw *283 is GRANTED, counsel is excused from further responsibilities herein, and the APPEAL IS DISMISSED. See 5th Cir. R. 42.2.