The attorney appointed to represent Gonzolo Gonzales 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). Gonzales has filed a response. The record is insufficiently developed to allow consideration of Gonzales’s claim of ineffective assistance of counsel; such a claim generally “cannot be resolved on direct appeal when the claim has not *422 been raised before the district court since no opportunity existed to develop the record on the merits of the allegations.” United States v. Cantwell, 470 F.3d 1087, 1091 (5th Cir. 2006) (internal quotation marks and citation omitted).

We have reviewed counsel’s brief, relevant portions of the record reflected therein, and Gonzales’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.