In the case of the OP’s husband, can. 844 §3 doesn’t apply, since he’s not a “member of [an] Eastern Church” or a “member of other Churches.” Rather, can. 844 §4 applies to him:
“If the danger of death is present or if, in the judgment of the diocesan bishop or conference of bishops, some other grave necessity urges it, Catholic ministers administer these same sacraments licitly also to other Christians not having full communion with the Catholic Church, who cannot approach a minister of their own community and who seek such on their own accord, provided that they manifest Catholic faith in respect to these sacraments and are properly disposed.”
The OP’s husband is a “Christian not having full communion with the Catholic Church”. So, he might licitly receive communion if all of the following conditions are met:
- he’s “in danger of death” or the Catholic bishop explicitly identifies there’s a “grave necessity” for the OP’s husband to receive the sacraments
- the OP’s husband is unable to approach his own minister for communion
- the OP’s husband believes what the Catholic Church believes about the Eucharist (True Presence of Christ, etc, etc)
- he’s properly disposed to receive the Eucharist.
At the very least, there’s no indication that he’s in danger of death (or that the bishop’s gotten involved in this situation), so no – he’s not able to receive the Eucharist at this time.