I don't have anything for this season, but VfL Bochum had the most expected goals allowed by a club in Bundesliga in 2024-25, with 66.09 expected goals allowed.

best expected goals conceded this season

	CLUB	XGA	SEASON	M	W	D	L	G	GC	XG	SH	SOT	PASS-ATT	PASS	POSS%	FOUL	YC	RC
1	Bochum	66.09	2024-25	34	6	7	21	33	67	43.98	436	139	12,858	9,684	44.8	466	71	2
2	M'gladbach	64.14	2024-25	34	13	6	15	55	57	51.65	417	163	16,212	13,460	49.7	339	53	3
3	Holstein Kiel	62.87	2024-25	34	6	7	21	49	80	41.45	372	141	12,787	9,934	43.6	407	77	4
4	Hoffenheim	59.17	2024-25	34	7	11	16	46	68	43.23	444	154	15,043	12,133	48.6	392	66	2
5	Heidenheim	58.77	2024-25	34	8	5	21	37	64	42.32	402	131	13,381	10,430	43.2	385	66	1
6	Leipzig	55.45	2024-25	34	13	12	9	53	48	47.49	407	151	16,946	14,112	52.4	376	68	5
7	Wolfsburg	54.29	2024-25	34	11	10	13	56	54	49.58	439	145	13,850	10,990	46.0	350	75	3
8	Augsburg	52.24	2024-25	34	11	10	13	35	51	35.61	398	120	13,633	10,913	44.0	351	78	5
9	Mainz	50.91	2024-25	34	14	10	10	55	43	52.70	421	150	15,020	11,784	50.3	408	71	5
10	Frankfurt	49.07	2024-25	34	17	9	8	68	46	67.00	486	182	15,999	13,338	49.9	341	55	1
11	Werder	48.96	2024-25	34	14	9	11	54	57	51.47	429	145	16,150	13,260	49.9	335	75	4
12	Union Berlin	48.86	2024-25	34	10	10	14	35	51	38.55	416	123	12,393	9,354	40.4	419	72	1
13	St. Pauli	48.60	2024-25	34	8	8	18	28	41	35.50	378	113	14,020	11,114	44.0	353	53	4
14	Stuttgart	47.82	2024-25	34	14	8	12	64	53	66.12	470	182	18,488	15,849	57.5	358	72	5
15	Freiburg	43.78	2024-25	34	16	7	11	49	53	45.62	409	144	15,277	12,333	48.7	316	54	2
16	Dortmund	43.35	2024-25	34	17	6	11	71	51	63.94	482	163	18,987	16,370	59.3	330	71	6
17	Leverkusen	38.15	2024-25	34	19	12	3	72	43	59.94	504	191	20,232	17,661	59.4	325	62	1
18	Bayern	26.08	2024-25	34	25	7	2	99	32	82.45	646	268	24,564	22,137	68.4	295	48	1