All optatives with or without ἄν in the direct form are retained (with or without ἄν) in indirect discourse introduced by ὅτι or ὡς. After verbs requiring the participle or infinitive, such optatives in principal clauses become participles or infinitives (with or without ἄν), but remain unchanged in subordinate clauses.
a. The optative in indirect discourse may represent either the indicative or the subjunctive after a secondary tense.
b. A present optative in indirect discourse may represent (1) the present indicative; (2) the imperfect ( cross2623 b) indicative; (3) the present subjunctive with or without ἄν; (4) the present optative.
Herbert Weir Smyth [n.d.], A Greek Grammar for Colleges; Machine readable text [info] [word count] [Smyth].