The attorney appointed to represent Santiago Sandoval 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). Sandoval has filed a response. The record is not sufficiently developed to allow us to make a fair evaluation of Sandoval’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). Sandoval’s request for appointment of substitute counsel is DENIED.

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